WO2022242288A1 - 双卡终端异常场景下的频段控制方法及终端设备 - Google Patents

双卡终端异常场景下的频段控制方法及终端设备 Download PDF

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Publication number
WO2022242288A1
WO2022242288A1 PCT/CN2022/081445 CN2022081445W WO2022242288A1 WO 2022242288 A1 WO2022242288 A1 WO 2022242288A1 CN 2022081445 W CN2022081445 W CN 2022081445W WO 2022242288 A1 WO2022242288 A1 WO 2022242288A1
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WIPO (PCT)
Prior art keywords
card
frequency band
terminal device
network
dual
Prior art date
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PCT/CN2022/081445
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English (en)
French (fr)
Inventor
魏珍荣
Original Assignee
荣耀终端有限公司
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Publication date
Application filed by 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Priority to EP22803617.4A priority Critical patent/EP4149180A4/en
Priority to US18/001,123 priority patent/US20230217520A1/en
Publication of WO2022242288A1 publication Critical patent/WO2022242288A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/401—Circuits for selecting or indicating operating mode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and in particular to a frequency band control method and terminal equipment in an abnormal scenario of a dual-card terminal.
  • two identification cards are usually installed in a dual-card terminal device, which respectively occupy different frequency bands to implement communication services.
  • a dual-card terminal device there may be a problem of insufficient compatibility when various components cooperate with each other, which may affect the signal quality of the dual-card terminal device.
  • both the main card and the secondary card work in the 5G frequency band, or the main card and the secondary card work in the 5G frequency band and the 4G/3G/2G frequency band respectively. Due to hardware matching, the 5G frequency band Incompatibility or poor compatibility with 5G/4G/3G/2G frequency bands, resulting in poor device communication performance when using dual-card combination frequency bands, which will affect the basic user experience.
  • the present application provides a frequency band control method and a terminal device in an abnormal scenario of a dual-card terminal, which can improve the signal quality deterioration caused by the dual-card terminal device working in a problematic combination of frequency bands.
  • the present application provides a frequency band control method in an abnormal scenario of a dual-card terminal, which is applied to a terminal device, and the terminal device supports 5G independent networking SA mode and/or non-independent networking NSA mode, and the method includes: When the working frequency band of the first identification card and the working frequency band of the second identification card of the terminal device belong to the combined frequency band in the preset blacklist, and the signal quality of the first or second identification card does not meet the preset Under signal quality conditions, terminal equipment is prohibited from working in the 5G new air interface frequency band;
  • the prohibited terminal equipment works in the 5G NR frequency band, including:
  • the terminal device If the terminal device is in 5G SA mode, turn off the 5G SA capability of the terminal device, and register the terminal device to the first network, which is a 4G or 3G or 2G network; or,
  • the terminal device If the terminal device is in 5G NSA mode, release the NR link in the dual connectivity ENDC link of the terminal device.
  • blacklists of corresponding combined frequency bands can be established according to different chips and different devices.
  • the combined frequency bands in the blacklist are problematic combination frequency bands with poor frequency band compatibility, which may cause terminal equipment signals when used. The quality deteriorates.
  • 5G products there is a problem of incompatibility or poor compatibility between 5G frequency bands and 5G/4G/3G/2G frequency bands, and a blacklist of combined frequency bands of 5G and 5G/4G/3G/2G can be established accordingly.
  • the above preset blacklist may include at least one combined frequency band, and one combined frequency band in the at least one combined frequency band may include a frequency band corresponding to the first network standard, and a frequency band corresponding to the second network standard. band.
  • the first network standard and the second network standard may be the same, for example, both are 5R NR standard, and may also be different, for example, they may be 5R NR standard and 4G LTE standard respectively.
  • the combined frequency bands may include two frequency bands, may also include three frequency bands, or more than three frequency bands.
  • the blacklist can be used to judge whether the working frequency band currently used by the dual-card terminal device is a problematic combination frequency band.
  • the corresponding strategy is to prohibit dual-card terminal devices from working in the 5G NR frequency band, so as to improve the signal quality deterioration caused by dual-card terminal devices working in problematic combination frequency bands.
  • At least one combined frequency band may include at least one of the following combined frequency bands:
  • the frequency band control method in the abnormal scenario of the dual-card terminal further includes:
  • the terminal device When the changed working frequency band of the first identification card and the working frequency band of the second identification card do not belong to the combined frequency band in the preset blacklist, the terminal device is allowed to work in the 5G NR frequency band.
  • the NR capability of the terminal device can be controlled to restore, allowing the terminal device to work in 5G NR frequency band, such as re-enabling the SA capability, or allowing the addition of ENDC links to ensure the signal quality of dual cards.
  • a white list may also be established, and the combined frequency bands in the white list may be combined frequency bands with better frequency band compatibility. Specifically, after the terminal device is prohibited from working in the 5G NR frequency band, if the combined frequency band of the dual card is the combined frequency band in the whitelist, the NR capability of the terminal device can be restored.
  • the terminal device if the terminal device is in the 5G SA mode, the 5G SA capability of the terminal device is turned off, and the terminal device is registered to the first network, including:
  • the first identification card resides in the 5G SA network and the second identification card resides in the 4G or 3G or 2G network, turn off the 5G SA capability of the first identification card and register the first identification card to the First Network; or,
  • both the first identification card and the second identification card reside in the 5G SA network, turn off the 5G SA capability of the target card, and register the target card to the first network; where the target card is the first identification card card and/or second identification card.
  • the 5G SA capability of the target card is closed above, and the target card is registered to the first network, including:
  • releasing the NR link in the ENDC link of the terminal device includes:
  • the first identification card resides in the 5G NSA network and the second identification card resides in the 4G or 3G or 2G network, release the ENDC link corresponding to the first identification card; or,
  • both the first identification card and the second identification card reside in the 5G NSA network, release the NR link in the ENDC link corresponding to at least one of the identification cards in the first identification card and the second identification card .
  • releasing the ENDC link corresponding to at least one of the first identity card and the second identity card includes:
  • the ENDC link corresponding to the second identification card is released.
  • the frequency band control method in the dual-card terminal abnormal scenario further includes: prohibiting the terminal device from adding an ENDC link again.
  • the terminal device may be registered with the first network by switching, or the terminal device may be registered with the first network by redirection.
  • the 5G base station can trigger the terminal device to fall back from the 5G SA network to LTE network. Which method the terminal device uses to fall back to the LTE network is determined by the 5G SA network.
  • the terminal device can search for the LTE network, initiate a tracking area update TAU process to the LTE network, and indicate that the 5G SA capability of the terminal device has been turned off.
  • the terminal device receives a TAU complete message from the first network; and in response to the TAU complete message, the terminal device registers with the LTE network.
  • the release of the ENDC link of the terminal device includes: the terminal device initiates a secondary cell group SCG failure process to the 5G NSA network; the terminal device receives an SCG release message from the 5G NSA network; and responds to the SCG release message , the terminal device releases the NR link in the ENDC link.
  • the above-mentioned allowing terminal equipment to work in the 5G NR frequency band includes:
  • the terminal device is allowed to add ENDC link.
  • the frequency band control method in the abnormal scenario of the dual-card terminal further includes: the terminal device initiates a TAU process to the LTE network, and instructs the 5G SA capability of the terminal device to The SA capability is enabled.
  • the frequency band control method in the abnormal scenario of the dual-card terminal further includes: re-registering the terminal device to the 5G SA network by switching or redirecting .
  • the terminal device may send a mobility update registration request to the 5G SA network, and the terminal device receives a mobility update registration completion message from the 5G SA network; and in response to the mobile update registration completion message, the terminal device registers with 5G SA network.
  • the above-mentioned first identification card is a main card
  • the above-mentioned second identification card is a supplementary card
  • the first identification card is a supplementary card
  • the second identification card is a main card
  • the present application provides a frequency band control device in an abnormal scenario of a dual-card terminal, and the device includes a unit for executing the method in the first aspect above.
  • the device may correspond to executing the method described in the first aspect above.
  • the relevant description of the units in the device please refer to the description in the first aspect above, and details are not repeated here for brevity.
  • Hardware or software includes one or more modules or units corresponding to the functions described above. For example, a processing module or unit, a display module or unit, etc.
  • the present application provides a terminal device, the terminal device includes a processor, the processor is coupled with a memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions stored in the memory, so that the first The methods in the aspect are executed.
  • the processor is used to execute the computer programs or instructions stored in the memory, so that the apparatus performs the method in the first aspect.
  • the present application provides a computer-readable storage medium on which is stored a computer program (also referred to as an instruction or code) for implementing the method in the first aspect.
  • a computer program also referred to as an instruction or code
  • the computer program when executed by a computer, the computer can execute the method in the first aspect.
  • the present application provides a chip, including a processor.
  • the processor is used to read and execute the computer program stored in the memory, so as to execute the method in the first aspect and any possible implementation manners thereof.
  • the chip further includes a memory, and the memory is connected to the processor through a circuit or wires.
  • the present application provides a chip system, including a processor.
  • the processor is used to read and execute the computer program stored in the memory, so as to execute the method in the first aspect and any possible implementation manners thereof.
  • the chip system further includes a memory, and the memory is connected to the processor through a circuit or wires.
  • the present application provides a computer program product
  • the computer program product includes a computer program (also referred to as an instruction or code), and when the computer program is executed by a computer, the computer implements the method in the first aspect .
  • FIG. 1 is a structural diagram of a dual-card terminal device involved in an embodiment of the present application
  • FIG. 2 is a schematic flow diagram of a frequency band control method in an abnormal scenario of a dual-card terminal provided by an embodiment of the present application;
  • FIG. 3 is one of the flow diagrams of the frequency band control method under the abnormal scenario of dual-card terminal in the scenario where the terminal device is registered to the NSA network provided by the embodiment of the present application;
  • Fig. 4 is the second schematic flow diagram of the frequency band control method in the dual-card terminal abnormal scenario provided by the embodiment of the present application when the terminal device is registered to the NSA network scenario;
  • FIG. 5 is the third schematic flow diagram of the frequency band control method in the scenario where the terminal device is registered to the NSA network in the scenario where the dual-card terminal is abnormal provided by the embodiment of the present application;
  • FIG. 6 is one of the schematic flow diagrams of the frequency band control method in the scenario where the terminal device is registered to the SA network in the scenario where the dual-card terminal is abnormal provided by the embodiment of the present application;
  • FIG 7 is the second schematic flow diagram of the frequency band control method in the scenario where the terminal device is registered to the SA network in the scenario where the dual-card terminal is abnormal provided by the embodiment of the present application;
  • Fig. 8 is the third schematic flow diagram of the frequency band control method in the scenario where the terminal device is registered to the SA network in the scenario where the dual-card terminal is abnormal provided by the embodiment of the present application;
  • FIG. 9 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • first and second and the like in the specification and claims herein are used to distinguish different objects, not to describe a specific order of objects.
  • first identification card and the second identification card are used to distinguish different identification cards, rather than describing a specific order of the identification cards.
  • words such as “exemplary” or “for example” are used as examples, illustrations or illustrations. Any embodiment or design scheme described as “exemplary” or “for example” in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as “exemplary” or “such as” is intended to present related concepts in a concrete manner.
  • multiple means two or more, for example, multiple processing units refer to two or more processing units, etc.; multiple A component refers to two or more components or the like.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • general packet radio service general packet radio service, GPRS
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Worldwide Interoperability for Microwave Access
  • Terminal equipment including equipment that provides voice and/or data connectivity to users, specifically, equipment that provides voice to users, or equipment that provides data connectivity to users, or equipment that provides voice and data connectivity to users equipment. Examples may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem.
  • the terminal device can communicate with the core network device via a radio access network (radio access network, RAN) device, exchange voice or data with the RAN, or exchange voice and data with the RAN.
  • radio access network radio access network
  • the terminal equipment may include user equipment (user equipment, UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle to everything (vehicle to everything, V2X) terminal equipment , machine-to-machine/machine-type communications (machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, Internet of things (Internet of things, IoT) terminal equipment, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user Agent (user agent), or user equipment (user device), etc.
  • IoT Internet of things
  • the terminal device may further include a relay (relay). Or it can be understood that all devices capable of performing data communication with the base station can be regarded as terminal devices.
  • PCS personal communication service
  • cordless telephone cordless telephone
  • session initiation protocol session initiation protocol, SIP
  • wireless local loop wireless local loop
  • WLL wireless local loop
  • PDA personal digital assistant
  • constrained devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities, etc.
  • it includes barcodes, radio frequency identification (radio frequency identification, RFID), sensors, global positioning system (global positioning system, GPS), laser scanners and other information sensing devices.
  • the terminal device may further include a relay (relay). Or it can be understood that all devices capable of performing data communication with the base station can be regarded as terminal devices.
  • the device for realizing the function of the terminal device may be the terminal device, or may be a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal device.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the network device in the embodiment of the present application may be a device capable of providing a random access function for a terminal device or a chip that may be configured in the device.
  • the equipment includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC) , base transceiver station (base transceiver station, BTS), home base station (home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), access in wireless fidelity (wireless fidelity, WIFI) system Access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception point, TRP), etc., can also be the fifth generation (the fifth generation , 5G) system, for example, a 5G base station (gNB) or transmission point (TRP or TP) in a
  • a gNB may include a centralized unit (CU) and a distributed unit (DU).
  • the gNB may also include an active antenna unit (AAU).
  • the CU implements some functions of the gNB, and the DU implements some functions of the gNB.
  • the CU is responsible for processing non-real-time protocols and services, and realizes the functions of radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer.
  • the DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical (physical, PHY) layer.
  • the AAU implements some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , or, sent by DU+AAU.
  • the network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network devices in the RAN, and the CU can also be divided into network devices in a core network (core network, CN), which is not limited in this application.
  • SIM cards Two subscriber identity module (SIM) cards are installed in the dual-card terminal device, wherein one SIM card may be considered as a primary SIM card, and the other SIM card may be considered as a secondary SIM card.
  • the dual-card terminal device may be a dual-card dual-standby (dual SIM dual standby, DSDS) terminal device or a dual-card dual-pass device.
  • the SIM card and its evolution are collectively referred to as the SIM card in the embodiment of the present application.
  • the SIM card may be a universal subscriber identity module (USIM), or an eSIM card, etc.
  • the dual-card terminal device includes a SIM card 1 and a SIM card 2 for an exemplary description below.
  • the SIM card may include subscriber information, such as international mobile subscriber identity (IMSI) or temporary mobile subscriber identity (TMSI), etc., for user identification.
  • IMSI international mobile subscriber identity
  • TMSI temporary mobile subscriber identity
  • SIM cards logically correspond to different communication entities on the network side.
  • a dual-card terminal device can be regarded as two communication entities or as two user equipments.
  • the two SIM cards in the dual-card terminal device may belong to the same operator or may belong to different operators, which is not limited in this embodiment of the present application.
  • one terminal device can support more than two SIM cards, which can be determined according to actual usage requirements, and is not limited in this embodiment of the present application.
  • 3GPP defines two schemes for 5G new air interface (new radio, NR) networking, namely independent networking (standalone, SA) and non-standalone networking (non-standalone, NSA).
  • SA networking refers to the independent deployment of 4G control plane (4G network carries control signaling), the joint deployment of 5G and 4G user plane (both 5G network and 4G network carry user plane data), or the independent deployment of 5G user plane (only 5G The network bears user plane data).
  • SA networking refers to the independent deployment of the 5G control plane and user plane, that is, the 5G network independently bears control signaling and user plane data.
  • SA network that is, a 5G network that is networked in SA networking mode.
  • NSA network that is, a 5G network that is networked in the NSA networking mode. Since there are various types of networks and terminals, there are currently situations where 5G cells or terminals only support NSA, only SA, or both NSA and SA.
  • the terminal device when the terminal device sends a user access request or registration request to the network, it reports the 5G capability to the network, for example, the capability (capability) field carries network capability information to indicate whether the terminal device is Supports NSA mode and/or SA mode.
  • the network can determine whether the terminal device supports the NSA mode and/or the SA mode based on the network capability information.
  • 5GS When the 5G system (5G system, 5GS) is deployed in SA mode, 5GS includes a 5G base station and a 5G core network (5G core network, 5GC), and the 5G base station is connected to the 5GC.
  • 5G core network 5G core network
  • the 5G base station may be a next generation base station (next generation NodeB, gNB).
  • the gNB can be connected to a terminal device, and communicate with the terminal device 800 using a new radio (new radio, NR) access technology, that is, the gNB and the terminal device communicate through an NR link.
  • NR new radio
  • 5GC is used for switching, forwarding, connecting, and routing data.
  • the network element in 5GC is a functional virtual unit, which may include but not limited to: a unit for access and mobility management function (AMF), a unit for session management function (session management function, SMF), network elements for unified data management (unified data management, UDM), etc.
  • AMF access and mobility management function
  • SMF session management function
  • UDM unified data management
  • the terminal device can establish an ENDC link with the 4G base station and the 5G base station.
  • the 4G base station may be an evolved base station (evolved Node B, eNB).
  • the terminal device may be connected to a 4G base station, and communicate with the 4G base station through an LTE link.
  • the 4G base station is connected to the 4G core network (evolved packet core, EPC).
  • EPC mainly includes the following network elements: mobility management entity (mobility management entity, MME), serving gateway (serving gateway, SGW), packet data network gateway (packet data network gateway, PGW), home subscriber server (home subscriber server) , HSS) and application servers, etc.
  • MME mobility management entity
  • SGW serving gateway
  • PGW packet data network gateway
  • PGW packet data network gateway
  • HSS home subscriber server
  • the main functions of the MME include access control, mobility management, attachment and detachment, session management (such as establishment, modification and release of bearers), etc.
  • the SGW is mainly used for routing and forwarding of data packets.
  • the main functions of the PGW include user-based packet filtering, lawful interception, and IP address assignment.
  • the HSS is used to store user subscription information, user subscription data, and location information of mobile users.
  • the LTE base station eNB is the master node (MN)
  • the NR base station gNB is the secondary node (SN)
  • the LTE cell is the master cell group (MCG)
  • the NR cell is the secondary cell group ( secondary cell group, SCG).
  • E-UTRA evolved-UMTS terrestrial radio access, evolved UMTS terrestrial radio access network
  • 4G network the 4G network.
  • the terminal device To obtain the services provided by the network, the terminal device first needs to register with the network, that is, register into the network.
  • network registration can be divided into the following two types:
  • Initial registration will be triggered when the terminal device is turned on. For example, assuming that the terminal device is currently in the 5G SA network, when the terminal device is powered on, the terminal device will initiate registration with the 5G SA network to achieve initial registration.
  • Mobile update registration also called mobile registration: When the terminal device leaves the current registration area and enters a new tracking area (TA), the terminal device can initiate a tracking area update (TAU) process , to register for mobile updates. For example, when a terminal device moves from the currently registered LTE network to a 5G SA network, the terminal device will initiate registration with the 5G SA network to implement mobile update registration.
  • TAU tracking area update
  • FIG. 1 shows a schematic structural diagram of a dual-card terminal device involved in an embodiment of the present application.
  • a dual-card terminal device may include an antenna 11 , a radio frequency front-end module 12 (such as a radio frequency chip), a baseband processing module 13 (such as a baseband chip), a SIM card 1 and a SIM card 2 .
  • the components shown in Figure 1 do not constitute a specific limitation on the terminal device, and the terminal device may also include more or fewer components than those shown in the figure.
  • the terminal device may include a power amplifier module, a radio frequency back-end module, a storage module, etc., and these modules are not shown in FIG. 1 for ease of description.
  • the signal quality of the dual-card terminal device will be affected.
  • dual-card terminal equipment has the problem of incompatibility or poor compatibility between 5G frequency bands and 5G/4G/3G/2G frequency bands.
  • Some frequency bands of the main card and some frequency bands of the secondary card are combined Afterwards, the overall performance deteriorates, and the combined frequency band of the primary and secondary cards that causes the overall performance to deteriorate is referred to as the problematic combined frequency band.
  • the signal quality of the main card and/or secondary card of the dual-card terminal device may be affected and deteriorate, which will affect the basic user experience.
  • this application provides a frequency band control method in an abnormal scenario of a dual-card terminal.
  • a dual-card terminal device supporting 5G SA mode or 5G NSA mode when the combined frequency band of the dual-card is in the blacklist and the main card and /or when the signal quality of the secondary card does not meet the preset signal quality conditions, the NR capability of the terminal device is controlled to fall back, such as disabling the SA capability, or disconnecting the ENDC link and prohibiting (suppressing) the addition of the ENDC link to improve the signal quality of the secondary card ;
  • the dual-card combination frequency band changes and the changed dual-card combination frequency band is not in the blacklist, the NR capability of the control terminal device is restored, for example, re-enable the SA capability, or stop suppressing the addition of the ENDC link to ensure that the dual-card combination Card signal quality, so as to avoid the problem of affecting the user's basic experience due to the wrong combination of frequency bands.
  • the signal quality of the primary card and/or the secondary card does not meet the preset signal quality condition means that the signal quality of the primary card is lower than the preset threshold value of the primary card, or the signal quality of the secondary card is lower than the preset threshold value of the secondary card, or the signal quality of the primary card is lower than the preset threshold value of the primary card and the signal quality of the secondary card is lower than the preset threshold value of the secondary card.
  • the method provided in the embodiment of the present application will be exemplarily described below by taking an example in which the signal quality of the secondary card is lower than the preset threshold value of the secondary card.
  • the combined frequency bands in the blacklist are problematic combined frequency bands with poor frequency band compatibility, which may cause the signal quality of terminal equipment to deteriorate when used.
  • a blacklist in Table 1 below.
  • Table 1 a blacklist of the combined frequency band of 5G+5G/4G/3G/2G can be established, as shown in Table 1 below. shown.
  • the combined frequency band may include two frequency bands, for example, frequency band 1 under network standard 1 and frequency band 2 under network standard 2.
  • the network standard 1 and the network standard 2 may be the same network standard, for example, both the network standard 1 and the network standard 2 are NR.
  • the network standard 1 and the network standard 2 may also be different network standards, for example, the network standard 1 is NR, and the network standard 2 is LTE/WCDMA/CDMA/GSM.
  • the NR network is also called a 5G network, and the corresponding frequency band can be called a 5G frequency band or an NR frequency band.
  • the LTE network is also called a 4G network, and the corresponding frequency band may be called a 4G frequency band or an LTE frequency band.
  • a WCDMA or CDMA network is also called a 3G network, and the corresponding frequency band can be called a 3G frequency band.
  • the GSM network is also called a 2G network, and the corresponding frequency band can be called a 2G frequency band.
  • the combined frequency bands may also include three frequency bands, or more than three frequency bands, which may be determined according to actual usage requirements, and are not limited in this embodiment of the present application.
  • the dual-card combined frequency band may be 1) NR frequency band + NR frequency band, 2) NR frequency band Frequency band + LTE frequency band, 3) NR frequency band + 3G frequency band, 4) NR frequency band + 2G frequency band, as shown in the combined frequency bands corresponding to index 1 to index 5 in Table 1.
  • the frequency band of the dual-card combination is NR frequency band + LTE frequency band as an example.
  • the main card is registered to the SA network, and the corresponding frequency band is NRN28, and the secondary card is registered to the LTE network, and the corresponding frequency band is LTE B40; correspondingly, the dual-card combination
  • the frequency band is NRN28+LTE B40.
  • the frequency band of dual-card combination as NR frequency band + NR frequency band as an example.
  • the main card is registered to the SA network, and the corresponding frequency band is NRN78.
  • the frequency band is NRN78+NRN3.
  • the signal strength of the terminal device such as a secondary card
  • the preset threshold value in the combined frequency band of NRN78+NR B3 that is, the compatibility of this combined frequency band is poor, as shown in index 5 in Table 1
  • the combined frequency band NRN78+NRN3 can be added to the blacklist.
  • the dual-card combination frequency band may be 1) ENDC combination frequency band+ENDC combination frequency band, 2) ENDC combined frequency band + LTE frequency band, 3) ENDC combined frequency band + 3G frequency band, 4) ENDC combined frequency band + 2G frequency band.
  • the dual-card combined frequency bands may include three frequency bands, or more than three frequency bands.
  • the dual-card combined frequency band as ENDC combined frequency band + LTE frequency band as an example.
  • the main card is registered to the 5G NSA network, and an ENDC link is added.
  • the ENDC combined frequency band is (LTE B3+NR N41), and the secondary card is registered to LTE network, the corresponding frequency band is LTE B5; correspondingly, the dual-card combination frequency band is (LTE B3+NR N41)+LTE B5.
  • the signal strength of the terminal device (such as the secondary card) is lower than the preset threshold value, that is, the compatibility of this combined frequency band is poor, as shown in Table 1
  • the combined frequency band (LTE B3+NR N41)+LTE B5 can be added to the blacklist.
  • the dual-card combination frequency band falls into the blacklist, it may be determined according to the signal condition whether the NR capability needs to be rolled back. For example, after the combined frequency band of the dual card is blacklisted, if the signal quality of the secondary card is found to be poor, the NR capability will be rolled back, such as prohibiting the NR frequency band or directly disabling the NR capability.
  • the terminal device when it is detected that the signal quality of the main card or the secondary card of the terminal device is poor, it can further detect whether the frequency band of the dual-card combination falls into the blacklist, and when the frequency band of the dual-card combination falls into the blacklist, Next, control the fallback of the NR capability, such as disabling the NR frequency band or directly disabling the NR capability.
  • the specific implementation methods for controlling the fallback of the NR capability above may include:
  • the ENDC link can be removed accordingly, the NR frequency band can be disabled, and the addition of ENDC can be suppressed.
  • the main card is registered to the 5G NSA network and the secondary card is registered to 5G NSA/4G/3G/2G
  • the main card and/or the secondary card have an ENDC link
  • the ENDC link of the primary card and/or the secondary card is removed , and suppress ENDC addition.
  • the SA capability can be disabled accordingly, and the 5G network can fall back to the 4G/3G/2G network.
  • the SA capability of the primary card and/or the secondary card is disabled.
  • the dual-card combination frequency band changes, for example, the main card frequency band changes, the secondary card frequency band changes, or both the primary card and secondary card frequency bands change. Further judge whether the frequency band of the dual-card combination after the change is still in the blacklist.
  • the blacklist can be used to judge whether the working frequency band currently used by the dual-card terminal device is a problematic combination frequency band.
  • the corresponding strategy is to suppress the dual-card terminal equipment from working in the 5G NR frequency band, so as to improve the signal quality deterioration caused by the dual-card terminal equipment working in the problematic combination frequency band.
  • the suppression is stopped, that is, the ENDC link is allowed to be added.
  • a white list may also be established, and the combined frequency bands in the white list may be combined frequency bands with better frequency band compatibility. Specifically, after suppressing the terminal device from working in the 5G NR frequency band, if the combined frequency band of the dual card is the combined frequency band in the whitelist, the NR capability of the terminal device can be restored.
  • the terminal device can initiate an SCG failure (SCG failure) process, triggering the network to release the ENDC link, that is, disconnect the ENDC link NR link, and suppress the subsequent addition of ENDC link; when the dual-card combination frequency band changes and the changed combined frequency band is not in the blacklist, stop the suppression, and then add ENDC link through network configuration.
  • SCG failure SCG failure
  • the process of the terminal device initiating SCG failure may include: the terminal device exchanges signaling with the 5G NSA network, performs radio resource control (radio resource control, RRC) reconfiguration, the terminal device sends SCG failure information to the 5G NSA network, and then The 5G NSA network sends SCG release (SCG release) information to the terminal device to release the ENDC link, that is, disconnect the NR link in the ENDC link.
  • RRC radio resource control
  • the terminal device can actively disable or turn off the SA capability, and then trigger the network search in the low standard network to find the LTE network as For example, when the TAU process is initiated on the LTE network, the terminal device is notified to the LTE network that it does not support the SA capability; further, if the combined frequency band of the dual card changes and the changed combined frequency band is not in the blacklist, the terminal device can re-enable the SA capability. capabilities, and notify the LTE network of SA capability recovery through the TAU process, and then register to the SA network through network configuration updates.
  • the preset threshold value of the signal quality of the secondary card can be preset by the system, and stored in the terminal device as a factory setting parameter.
  • different network standards may use different preset thresholds, which may be determined according to actual usage requirements, and are not limited in this embodiment of the present application.
  • the threshold value may be preset as -100 decibels (dB); for the 2G or 3G network standard, the threshold value may be preset as -80 dB.
  • the solution of this application is also applicable to other performance problems of dual-card combination frequency bands due to various reasons, such as network restrictions of specific frequency bands, which may cause performance degradation of dual-card combination frequency bands.
  • the application method can also be used to judge whether the frequency band of the dual-card combination is in the blacklist and whether the signal quality of the secondary card is below the preset threshold value.
  • the NR capability is controlled to fall back to improve the signal quality of the secondary card; further, when the frequency band of the dual-card combination changes and the changed frequency band of the dual-card combination is not in the blacklist, it can be controlled The NR capability is restored to ensure the signal quality of dual cards, so as to avoid the problem of affecting the user's basic experience due to problematic combination of frequency bands.
  • the frequency band control method provided by the embodiment of the present application under the abnormal scenario of the dual-card terminal is exemplarily described below with reference to FIG. 2 .
  • the method includes the following steps S101 to S111.
  • step S103 If the signal strength of the secondary card is lower than the preset threshold value, continue to execute the following step S103; if the signal strength of the secondary card is higher than or equal to the preset threshold value, return to continue to execute S102.
  • step S104 If the dual-card combination frequency band is in the blacklist, continue to execute the following step S104; if the dual-card combination frequency band is not in the blacklist, then end.
  • the embodiment of the present application does not limit the execution order of S102 and S103.
  • the terminal device can first determine whether the frequency band of the dual-card combination is in the blacklist, and then determine whether the signal strength of the secondary card is lower than the preset threshold after determining that the frequency band of the dual-card combination is in the blacklist; Check whether the combined frequency band of the card is in the blacklist and whether the signal strength of the secondary card is lower than the preset threshold.
  • it may be determined according to actual usage requirements, and is not limited in this embodiment of the application.
  • the terminal device may report network capability information to the network (such as MME) through the process of attaching (attach) to the network, or through the TAU process, and the information element (information element, IE) in the network capability information may be Include bit "N1mode".
  • the bit "N1mode” takes the first value (for example, 0)
  • the network capability information is used to indicate that the terminal device does not support 5G and SA networking mode, which is equivalent to shielding the terminal device from its ability to support NR (disable NR) .
  • the bit "N1mode” takes a second value (for example, 1)
  • the network capability information is used to indicate that the terminal device supports 5G and SA networking modes. In this way, the network can know whether the 5G network mode is NSA mode or SA mode.
  • the 5G network mode of the terminal capability is the SA mode, disable the SA capability, and search for a low standard network (such as an LTE network) for registration.
  • a low standard network such as an LTE network
  • the methods for the terminal device to fall back from the 5G SA network to the LTE network may include the following two methods:
  • the terminal device can autonomously connect to the 4G base station and register with the EPC when the SA capability is disabled.
  • the terminal device can first disconnect from the 5G SA network, and then connect to the LTE network autonomously. Specifically, the terminal device can autonomously search for a cell of the 4G base station on the LTE frequency band, and select a cell to camp on. After the terminal device resides in the cell of the 4G base station, it will execute the process of establishing an RRC connection (RRC connection establishment) and the random access procedure (random access procedure) with the cell, thereby establishing a connection with the cell, that is, connecting to 4G base station. After the terminal device is connected to the 4G base station, it can register with the EPC to use the services provided by the EPC.
  • RRC connection establishment RRC connection establishment
  • random access procedure random access procedure
  • the terminal device automatically falls back from the 5G SA network to the LTE network.
  • the terminal device can fall back to the LTE network under the trigger of the 5G base station when the SA capability is disabled.
  • the terminal device can report the B1 event and/or B2 event about LTE to the 5G base station according to the private threshold, and the 5G base station will respond to the B1 event and/or B2 event about LTE. Under the trigger of the 5G base station, it will fall back to the LTE network.
  • the B1 event and B2 event related to LTE are events for starting inter-system handover.
  • the foreign system is the LTE system.
  • the terminal device reports the B1 event related to LTE.
  • the terminal device reports a B2 event about LTE. That is to say, when the terminal device reports the B1 event or B2 event about LTE to the 5GC, the 5GC will trigger the terminal device to switch from the 5G SA network to the LTE network.
  • the terminal device may set a private threshold, and the private threshold may be set to disable the SA capability of the terminal device. That is to say, as long as the terminal device disables the SA capability, the terminal device will report the B1 event and/or B2 event about LTE to the 5G base station, so that the 5G base station will initiate inter-system handover, triggering the terminal device to fall back from the 5G SA network to the LTE network .
  • the 5G base station can trigger the terminal device to fall back from the 5G SA network to the LTE network through handover (handover to LTE) or redirection (redirect to LTE) according to the terminal capability and network deployment. Which method the terminal device uses to fall back to the LTE network is determined by the 5G SA network.
  • the terminal device When using the handover method (handover to LTE), the terminal device disconnects from the 5G SA network after connecting to the LTE network. This method does not involve the release of air interface resources and is more efficient.
  • the terminal device When using the redirection method (redirect to LTE), the terminal device first disconnects from the 5G SA network, and then connects to the LTE network. This method will release air interface resources, which need to be rebuilt later.
  • the terminal device in the case of disabling the SA capability, can take the first value (for example, 0) of the bit "N1mode" in the network capability information, and the network capability information is used to indicate that the terminal device does not support 5G and the SA networking mode In order to prevent the terminal device from switching from the LTE network to the 5G SA network under the trigger of the EPC after falling back from the 5G SA network to the LTE network when the SA capability is disabled.
  • the working frequency band of the primary card and/or the secondary card of the terminal device changes.
  • step S109 If the dual-card combination frequency band is not in the blacklist, continue to execute the following step S109; if the dual-card combination frequency band is still in the blacklist, return to continue to execute the above-mentioned S107.
  • the terminal device may set the bit "N1mode" in the network capability information to a second value (for example, 1), and the network capability information is used to indicate that the terminal device supports 5G and SA networking modes.
  • a second value for example, 1
  • the SA capability is re-enabled to restore the NR capability.
  • the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be executed according to the The method provided in the embodiment only needs to be used for communication.
  • the execution subject of the method provided by the embodiment of the present application may be a terminal device or a network device (such as the above-mentioned 4G base station and/or EPC, or a 5G base station and/or 5GC), or a terminal device or a network device that can call program and execute the functional modules of the program.
  • Table 2 shows the possible combinations of the main card and the secondary card respectively residing in the network in the dual-card terminal device.
  • the networks where the main card and the secondary card reside may be the same or different.
  • the specific implementation manners of the frequency band control method in the abnormal scene of the dual-card terminal provided by the embodiment of the present application are different.
  • the embodiments of this application include but are not limited to the scenarios listed in Table 2.
  • the 5G network mode is the NSA mode
  • the following first, second and third embodiments will be used to describe in detail the abnormality of the dual-card terminal provided by the embodiment of this application in combination with Figure 3, Figure 4 and Figure 5.
  • a specific implementation manner of the frequency band control method in the scenario is the scenario where the 5G network mode is the NSA mode.
  • Figure 3 is a signaling flow chart of the frequency band control method in the abnormal scenario of dual-card terminals provided by the embodiment of the present application for the scenario where the main card resides in the 5G NSA network and the secondary card resides in the 2G/3G/4G network, specifically The following steps S201A-S212A are included.
  • the terminal device In the process of connecting the main card to the 5G NSA network, the terminal device first connects to the 4G base station, and then attaches and registers to the EPC.
  • S202A register the secondary card of the terminal device with the 2G/3G/4G network.
  • the working frequency band of the secondary card is the 2G frequency band.
  • the working frequency band of the secondary card is the 3G frequency band.
  • the working frequency band of the secondary card is the 4G frequency band.
  • the secondary card is first connected to the 4G base station, and then attached and registered to the EPC.
  • the terminal device activates the main card ENDC link.
  • the main card when the main card is connected to the 5G NSA network and the ENDC link is activated, the main card can establish dual connections with the 4G base station and the 5G base station.
  • the working frequency band of the main card includes the 5G frequency band and the 4G frequency band.
  • the terminal device judges whether the signal strength of the secondary card is lower than a preset threshold value.
  • the dual-card terminal device When the signal strength of the secondary card is lower than the preset threshold value, the dual-card terminal device is in an abnormal scene.
  • the terminal device judges whether the dual-card combination frequency band is in the blacklist.
  • the working frequency band of the main card is LTE B3+NR N41
  • the working frequency band of the secondary card is LTE B5.
  • the blacklist includes (LTE B3+NR N41)+LTE B5. Therefore, the terminal device can determine that the dual-card combination frequency band is in the blacklist.
  • the terminal device initiates an SCG failure (SCG failure) process to the NSA network.
  • SCG failure SCG failure
  • the terminal device receives an SCG release (SCG release) message delivered by the NSA network.
  • SCG release SCG release
  • the terminal device releases the main card ENDC link.
  • the terminal device releases the NR link in the ENDC link of the main card.
  • the terminal device suppresses the main card from adding the ENDC link.
  • the terminal device initiates the SCG failure process and triggers the network Release NR link in ENDC link and suppress ENDC link addition.
  • the working frequency band of the main card changes, and the 5G frequency band is disabled, and the 4G frequency band is reserved for continued use.
  • the combined frequency band composed of the 5G and 4G frequency bands of the main card + the 2G/3G/4G frequency band of the secondary card is changed to the combined frequency band composed of the 4G frequency band of the main card + the 2G/3G/4G frequency band of the secondary card.
  • the working frequency band of the main card is LTE B3+NR N41
  • the working frequency band of the main card becomes LTE B3.
  • the frequency band of the dual-card combination is changed from (LTE B3+NR N41)+LTE B5 to (LTE B3+LTE B5).
  • the terminal device judges whether the dual-card combination frequency band is still in the blacklist.
  • step S212A If the changed dual-card combined frequency band (main card 4G frequency band + secondary card 2G/3G/4G frequency band) is not in the blacklist, proceed to the following step S212A; if the changed dual-card combined frequency band is still in the blacklist , return to continue to execute the above S210A.
  • the terminal device allows the main card to add an ENDC link.
  • the terminal device triggers to stop suppressing the ENDC link addition, thus allowing the main card to re-establish the ENDC link, Continue to use the 5G frequency band to restore NR capabilities.
  • the main card of the terminal device is registered to the 5G NSA network and the secondary card is registered to the 2G/3G/4G network
  • execute the corresponding processing strategy if the combined frequency band of the dual card is in the blacklist and the signal quality of the secondary card is lower than the preset threshold value, the NR capability will be rolled back, such as releasing the main card ENDC link, and inhibit the main card from adding ENDC link to improve the signal quality of the secondary card; further, when the frequency band of the dual-card combination changes and the changed frequency band of the dual-card combination is not in the blacklist, you can stop suppressing the addition of the ENDC link , to restore the NR capability to ensure the signal quality of dual cards, so as to avoid affecting the basic user experience due to problematic combination of frequency bands.
  • Fig. 4 is a signaling flow chart of the frequency band control method under the abnormal scenario of the dual-card terminal provided by the embodiment of the present application for the scenario where the secondary card resides in the 5G NSA network and the primary card resides in the 2G/3G/4G network, specifically The following steps S201B-S212B are included.
  • the secondary card of the terminal device is registered to the 5G NSA network.
  • S202B register the main card of the terminal device with the 2G/3G/4G network.
  • the terminal device activates the ENDC link of the secondary card.
  • the secondary card when the secondary card is connected to the 5G NSA network and the ENDC link is activated, the secondary card can establish dual connections with NR and LTE, and the working frequency band of the secondary card includes 5G frequency band and 4G frequency band.
  • the terminal device judges whether the signal strength of the secondary card is lower than a preset threshold.
  • the terminal device judges whether the dual-card combined frequency band is in the blacklist.
  • the terminal device initiates an SCG failure (SCG failure) process to the NSA network.
  • SCG failure SCG failure
  • the terminal device receives an SCG release (SCG release) message delivered by the NSA network.
  • SCG release SCG release
  • the terminal device releases the ENDC link of the secondary card.
  • the terminal device prevents the secondary card from adding the ENDC link.
  • the terminal device when the combined frequency band composed of the 2G/3G/4G frequency band of the main card + the 5G and 4G frequency bands of the secondary card is in the blacklist, and the signal quality of the secondary card is lower than the preset threshold value, the terminal device initiates the SCG failure process to the NSA network, Trigger NSA network to release ENDC link, and suppress ENDC link addition.
  • the working frequency band of the secondary card changes, in which the 5G NR frequency band is disabled, and the 4G frequency band is reserved for continued use.
  • the combined frequency band composed of the 2G/3G/4G frequency band of the main card + the 5G and 4G frequency bands of the secondary card is changed to the combined frequency band composed of the 2G/3G/4G frequency band of the main card + the 4G frequency band of the secondary card.
  • the terminal device judges whether the dual-card combination frequency band is still in the blacklist.
  • step S212B If the changed dual-card combination frequency band (main card 2G/3G/4G frequency band + secondary card 4G frequency band) is not in the blacklist, then continue to perform the following step S212B; if the changed dual-card combination frequency band is still in the blacklist , return to continue to execute the above S210B.
  • the terminal device allows the secondary card to add an ENDC link.
  • the terminal device triggers to stop suppressing the addition of the ENDC link, thus allowing the secondary card to re-establish the ENDC link, Continue to use the 5G frequency band to restore NR capabilities.
  • the secondary card of the terminal device in the scenario where the secondary card of the terminal device is registered to the 5G NSA network and the main card is registered to the 2G/3G/4G network, it can be judged whether the combined frequency band of the dual card is in the blacklist and the secondary card Whether the signal quality is lower than the preset threshold value, execute the corresponding processing strategy: if the frequency band of the dual-card combination is in the blacklist and the signal quality of the secondary card is lower than the preset threshold value, the NR capability will be rolled back, such as releasing the secondary card ENDC link, and inhibit the secondary card from adding ENDC link to improve the signal quality of the secondary card; further, when the frequency band of the dual-card combination changes and the changed frequency band of the dual-card combination is not in the blacklist, you can stop suppressing the addition of the ENDC link , to restore the NR capability to ensure the signal quality of dual cards, so as to avoid affecting the basic user experience due to problematic combination of frequency bands.
  • Fig. 5 is a signaling flow chart of the frequency band control method in the dual-card terminal abnormal scenario provided by the embodiment of the present application for the scenario where both the primary card and the secondary card reside on the 5G NSA network, specifically including the following steps S301-S317.
  • the main card of the terminal device is registered to the 5G NSA network.
  • the secondary card of the terminal device is registered to the 5G NSA network.
  • the terminal device activates the ENDC link of the primary card and the ENDC link of the secondary card.
  • the main card when the main card is connected to the 5G NSA network and the ENDC link is activated, the main card can establish dual connections with NR and LTE, so the working frequency band of the main card includes 5G frequency band and 4G frequency band.
  • the secondary card when the secondary card is connected to the 5G NSA network and the ENDC link is activated, the secondary card can establish dual connections with NR and LTE, so the working frequency band of the secondary card includes 5G frequency band and 4G frequency band.
  • the terminal device judges whether the signal strength of the secondary card is lower than a preset threshold.
  • the terminal device judges whether the dual-card combined frequency band is in the blacklist.
  • the terminal device initiates an SCG failure (SCG failure) process to the NSA network.
  • SCG failure SCG failure
  • the terminal device receives an SCG release (SCG release) message delivered by the NSA network.
  • SCG release SCG release
  • the terminal device releases the main card ENDC link.
  • the terminal device suppresses the main card from adding the ENDC link.
  • the terminal device initiates the SCG failure process, triggering the network to release the primary card.
  • card ENDC link and inhibit master card from adding ENDC link.
  • the working frequency band of the main card changes, and the 5G NR frequency band is disabled, and the 4G frequency band is reserved for continued use.
  • the combined frequency band composed of the 5G and 4G frequency bands of the main card + the 5G and 4G frequency bands of the secondary card is changed to the combined frequency band composed of the 4G frequency band of the main card + the 5G and 4G frequency bands of the secondary card.
  • the terminal device determines whether the dual-card combination frequency band is still in the blacklist.
  • the terminal device allows the main card to add an ENDC link.
  • the terminal device triggers to stop suppressing the addition of the ENDC link, so the main card is allowed to re-establish the ENDC link and continue to use the 5G frequency band. NR ability restored.
  • the terminal device prevents the secondary card from adding the ENDC link.
  • the terminal device initiates the SCG failure process, triggering the network to release the secondary card ENDC link, and suppress the secondary card to add ENDC link.
  • the working frequency band of the secondary card changes, and the 5G NR frequency band is disabled, and the 4G frequency band is reserved for continued use.
  • the combined frequency band composed of the 4G frequency band of the main card + the 5G and 4G frequency bands of the secondary card is changed to the combined frequency band composed of the 4G frequency band of the main card + the 4G frequency band of the secondary card.
  • the terminal device determines whether the dual-card combination frequency band is still in the blacklist.
  • step S317 If the changed dual-card combination frequency band (main card 4G frequency band + secondary card 4G combination frequency band) is not in the blacklist, then continue to perform the following step S317; if the changed dual-card combination frequency band is still in the blacklist, return Continue to execute the above S315.
  • the terminal device allows the primary card and/or the secondary card to add an ENDC link.
  • the terminal device triggers to stop suppressing the addition of the ENDC link, thereby allowing the main card to re-add the ENDC link and/or the secondary card Re-add the ENDC link, which allows the main card and/or the secondary card to use the 5G frequency band to restore the NR capability.
  • the frequency band of the dual-card combination changes and the changed frequency band of the dual-card combination is not in the blacklist, stop suppressing the ENDC link addition of the primary card and/or the secondary card, and realize NR capability recovery, so as to ensure the signal quality of the dual-card , so as to avoid affecting the basic user experience due to problematic combination of frequency bands.
  • steps S308 to S312 describe the related process of releasing the ENDC link of the primary card
  • steps S313 to S317 describe the related process of releasing the ENDC link of the secondary card.
  • the frequency band of the dual-card combination is in the blacklist and the signal quality of the secondary card is lower than the preset threshold value, and the NR capability is rolled back, should the ENDC link of the primary card be released first, and then the ENDC link of the secondary card, or first Release the ENDC link of the secondary card and then release the ENDC link of the main card, or release the ENDC link of the main card and the ENDC link of the secondary card at the same time, and roll back the NR capability to exit the blacklist.
  • the details can be determined according to the actual use requirements, and this application embodiment does not make any decisions on this limited.
  • the frequency band control method in the abnormal scenario of the dual-card terminal provided by the embodiment of the present application has been exemplarily described.
  • Fig. 6 is a signaling flow chart of the frequency band control method provided by the embodiment of the present application for the scenario where the main card resides in the 5G SA network and the secondary card resides in the 2G/3G/4G network. The following steps S401A-S414A are included.
  • S401A register the main card of the terminal device with the 5G SA network.
  • the terminal device In the process of connecting to the 5G SA network, the terminal device first connects to the 5G base station, and then attaches and registers to the 5GC.
  • the terminal device may first send a registration request (registration request) to the 5G SA network.
  • the registration request carries information such as the capability of the terminal device, registration type, and security parameters. Capabilities of the terminal device may include whether to support handover (handover) to an evolved packet system (evolved packet system, EPS), whether to support redirection (redirect) to EPS, and so on.
  • the 5G SA network verifies the identity of the terminal device based on the information provided by the terminal device. After the verification is passed, if the 5G SA network accepts the registration request of the terminal device, it will feed back a registration accept message (registration accept) to the terminal device.
  • the terminal device After the terminal device is connected to the 5G SA network, it can communicate with 5GC and use various services provided by 5GC.
  • the working frequency band of the main card is the 5G frequency band.
  • S402A register the secondary card of the terminal device with the 2G/3G/4G network.
  • the working frequency band of the secondary card is the 2G frequency band.
  • the working frequency band of the secondary card is the 3G frequency band.
  • the working frequency band of the secondary card is the 4G frequency band.
  • the terminal device judges whether the signal strength of the secondary card is lower than a preset threshold.
  • the dual-card terminal device When the signal strength of the secondary card is lower than the preset threshold value, the dual-card terminal device is in an abnormal scene.
  • the terminal device judges whether the dual-card combined frequency band is in the blacklist.
  • the working frequency band of the main card is NRN28
  • the working frequency band of the secondary card is LTEB40.
  • (NRN28+LTB40) is included in the blacklist. Therefore, the terminal device can determine that the dual-card combined frequency band (NRN28+LTEB40) is in the blacklist.
  • the terminal device disables the SA capability.
  • the terminal device when the combined frequency band composed of the 5G frequency band of the main card + the 2G/3G/4G frequency band of the secondary card is in the blacklist, and the signal quality of the secondary card is lower than the preset threshold value, the terminal device triggers to disable the SA capability and searches for a lower standard 2G/3G/4G network (take 4G network as an example below) to register.
  • a lower standard 2G/3G/4G network take 4G network as an example below
  • the terminal device initiates a TAU process to the 4G network, and indicates that the SA capability is disabled.
  • the terminal device receives a TAU completion message delivered by the 4G network, and registers the main card with the 4G network.
  • the registration of the main card with the 4G network means that the terminal device can autonomously connect to the 4G base station and register the main card with the EPC when the SA capability is disabled.
  • the terminal device initiates the TAU process to notify the 5G network of information changes, and the AMF in the core network of the 5G network can migrate the context of the terminal device to the MME in the 4G network through the N26 interface.
  • the terminal device sends network capability (network capability) information to the EPC (such as MME) during the process of falling back to the 4G LTE network, and the network capability information is used to indicate that the terminal device does not support 5G and SA networking modes .
  • EPC will think that the terminal device does not support 5G and SA networking, that is, it will not trigger the terminal device to switch from the LTE network to the 5G SA network.
  • the terminal device after the terminal device is connected to the LTE network, it can prevent the terminal device from switching back to the 5G SA network from the LTE network by suppressing the reporting of the B1 event and/or the B2 event on the NR. After suppressing the reporting of the B1 event and/or the B2 event about the NR, even if the reporting condition is met currently, the terminal device will not report the B1 event or the B2 event about the NR. This can prevent the terminal device from falling back from the 5G SA network to the LTE network, and then switching from the LTE network to the 5G SA network under the trigger of the EPC.
  • the B1 event and the B2 event related to NR are events for starting inter-system handover.
  • the different system is a 5G system.
  • the terminal device reports the B1 event about NR.
  • the terminal device reports the B2 event about NR. That is to say, when the terminal device reports the B1 event or B2 event about NR to the EPC, the EPC will trigger the terminal device to switch from the LTE network to the 5G SA network.
  • the working frequency band of the main card changes; correspondingly, the combined frequency band composed of the 5G frequency band of the main card + the 2G/3G/4G frequency band of the secondary card changes to the 4G frequency band of the main card + The combined frequency band composed of the 2G/3G/4G frequency band of the secondary card.
  • the working frequency band of the main card is changed from NRN28 to LTE B3
  • the combined frequency band of the dual card is changed from (NRN28+LTEB40) to (LTE B3+LTEB40).
  • the terminal device judges whether the dual-card combination frequency band is still in the blacklist.
  • step S410A If the changed frequency band of the dual-card combination is not in the blacklist, continue to execute the following step S410A; if the frequency band of the dual-card combination is still in the blacklist, return to continue the execution of the above-mentioned S408A.
  • the terminal device re-enables the SA capability.
  • the changed combination frequency band main card 4G frequency band + secondary card 2G/3G/4G frequency band
  • the terminal device can re-enable the main card SA capability .
  • the terminal device initiates a TAU process to the 4G network, and indicates that the SA capability has been restored.
  • the terminal device receives a TAU completion message delivered by the 4G network, and registers the main card with the 4G network.
  • the terminal device sends network capability (network capability) information to the EPC (such as MME) during the TAU process, and the network capability information is used to indicate that the terminal device supports 5G and SA networking modes. In this way, EPC will consider that the terminal device supports 5G and SA networking.
  • network capability network capability
  • the terminal device sends a mobility update registration request to the 5G SA network.
  • the terminal device can reselect or switch the main card to the 5G SA network through mobility means.
  • the terminal device judges that certain conditions are met (the network quality of the 5G SA network is better than that of the LTE network)
  • the terminal device is triggered to switch back to the 5G SA network from the LTE network.
  • the terminal device receives the mobility update registration completion message, and re-registers the main card to the 5G SA network.
  • the terminal device restores the SA capability and re-registers to the 5G SA network to achieve NR capability recovery.
  • the fourth embodiment in the scenario where the main card of the terminal device is registered to the 5G SA network and the secondary card is registered to the 2G/3G/4G network, it can be judged whether the combined frequency band of the dual card is in the blacklist and the secondary card Whether the signal quality is lower than the preset threshold value, execute the corresponding processing strategy: if the combined frequency band of the dual card is in the blacklist and the signal quality of the secondary card is lower than the preset threshold value, the NR capability will be rolled back, such as disabling the SA capability , and register the main card to the 2G/3G/4G network to improve the signal quality of the secondary card; further, when the dual-card combination frequency band changes and the changed dual-card combination frequency band is not in the blacklist, the SA capability can be restored, Re-register the main card to the 5G SA network to restore the NR capability to ensure the signal quality of the dual card, so as to avoid affecting the basic user experience due to problematic combination of frequency bands.
  • Figure 7 is a signaling flow chart of the frequency band control method in the abnormal scenario of the dual-card terminal provided by the embodiment of the present application for the scenario where the secondary card resides in the 5G SA network and the primary card resides in the 2G/3G/4G network, specifically The following steps S401B-S414B are included.
  • the secondary card of the terminal device is registered to the 5G SA network.
  • the working frequency band of the secondary card is the 5G frequency band.
  • S402B register the main card of the terminal device with the 2G/3G/4G network.
  • the working frequency band of the main card is the 2G frequency band.
  • the working frequency band of the main card is the 3G frequency band.
  • the working frequency band of the main card is the 4G frequency band.
  • the terminal device determines whether the signal strength of the secondary card is lower than a preset threshold.
  • the terminal device judges whether the dual-card combination frequency band is in the blacklist.
  • the terminal device disables the SA capability.
  • the terminal device when the combined frequency band composed of the 2G/3G/4G frequency band of the main card + the 5G frequency band of the secondary card is in the blacklist, and the signal quality of the secondary card is lower than the preset threshold value, the terminal device triggers to disable the SA capability of the secondary card, and searches for more Low-standard 2G/3G/4G network (the following uses 4G network as an example) to register.
  • Low-standard 2G/3G/4G network the following uses 4G network as an example
  • the terminal device initiates a TAU process to the 4G network, and indicates that the SA capability of the secondary card is disabled.
  • the terminal device receives the TAU completion message delivered by the 4G network, and registers the secondary card with the 4G network.
  • the working frequency band of the secondary card changes; correspondingly, the combined frequency band composed of the 2G/3G/4G frequency band of the main card + the 5G frequency band of the secondary card changes to the 2G/3G frequency band of the main card.
  • the terminal device judges whether the dual-card combination frequency band is still in the blacklist.
  • step S410B If the changed frequency band of the dual-card combination is not in the blacklist, continue to execute the following step S410B; if the changed frequency band of the dual-card combination is still in the blacklist, return to continue the execution of the above-mentioned S408B.
  • the terminal device re-enables the SA capability of the secondary card.
  • the changed combined frequency band main card 2G/3G/4G frequency band + secondary card 4G frequency band
  • the terminal device can re-enable the SA capability of the secondary card .
  • the terminal device initiates a TAU process to the 4G network, and indicates that the SA capability has been enabled.
  • the terminal device receives the TAU completion message delivered by the 4G network, and registers the secondary card with the 4G network.
  • the terminal device sends a mobility update registration request to the 5G SA network.
  • the terminal device can reselect or switch the secondary card to the 5G SA network through mobility means.
  • the terminal device receives the SA mobility update registration completion message, and registers the secondary card with the 5G SA network.
  • the terminal device re-enables the SA capability of the secondary card and re-registers the secondary card to the 5G SA network, Realize NR capability recovery.
  • the secondary card of the terminal device is registered to the 5G SA network and the primary card is registered to the 2G/3G/4G network
  • execute the corresponding processing strategy if the combined frequency band of the dual card is in the blacklist and the signal quality of the secondary card is lower than the preset threshold value, the NR capability will be rolled back, such as disabling the SA capability , and register the secondary card to the 2G/3G/4G network to improve the signal quality of the secondary card; further, when the frequency band of the dual-card combination changes and the changed frequency band of the dual-card combination is not in the blacklist, the SA capability can be restored, Re-register the secondary card to the 5G SA network to restore the NR capability to ensure the signal quality of the dual card, so as to avoid affecting the basic user experience due to problematic combination of frequency bands.
  • Figure 8 is a signaling flow chart of the frequency band control method in the dual-card terminal abnormal scenario provided by the embodiment of the present application for the scenario where both the primary card and the secondary card reside on the 5G SA network, specifically including the following steps S501-S519 .
  • the main card of the terminal device is registered to the 5G SA network.
  • the working frequency band of the main card is the 5G frequency band.
  • the secondary card of the terminal device is registered to the 5G SA network.
  • the working frequency band of the secondary card is the 5G frequency band.
  • the terminal device judges whether the signal strength of the secondary card is lower than a preset threshold.
  • the terminal device judges whether the dual-card combined frequency band is in the blacklist.
  • the terminal device disables the SA capability of the main card.
  • the terminal device when the combined frequency band composed of the 5G frequency band of the main card + the 5G frequency band of the secondary card is in the blacklist, and the signal quality of the secondary card is lower than the preset threshold value, the terminal device triggers to disable the SA capability of the main card, and searches for lower-standard 2G /3G/4G network (4G network is used as an example below) to register.
  • 2G /3G/4G network (4G network is used as an example below
  • the terminal device initiates a TAU process to the 4G network, and indicates that the SA capability of the main card is disabled.
  • the terminal device receives a TAU completion message delivered by the 4G network, and registers the main card with the 4G network.
  • the working frequency band of the main card changes; correspondingly, the combined frequency band composed of the 5G frequency band of the main card + the 5G frequency band of the secondary card changes to the 4G frequency band of the main card + the 5G frequency band of the secondary card composed of combined frequency bands.
  • the terminal device judges whether the combined frequency band of the dual card (the 4G frequency band of the main card + the 5G frequency band of the secondary card) is still in the blacklist.
  • the terminal device re-enables the SA capability of the main card.
  • the terminal device can reselect or switch the main card to the 5G SA network through mobility means. For ease of illustration, this step is not shown in FIG. 8 .
  • the terminal device disables the SA capability of the secondary card.
  • the 5G NR frequency band of the secondary card is disabled.
  • the terminal device initiates a TAU process to the 4G network, and indicates that the SA capability of the secondary card is disabled.
  • the terminal device receives a TAU completion message delivered by the 4G network, and registers the secondary card with the 4G network.
  • the working frequency band of the secondary card changes; correspondingly, the combined frequency band composed of the 4G frequency band of the main card + the 5G frequency band of the secondary card changes to the 4G frequency band of the main card + the 4G frequency band of the secondary card composed of combined frequency bands.
  • the terminal device judges whether the dual-card combination frequency band is still in the blacklist.
  • step S516 If the changed dual-card combination frequency band is not in the blacklist, continue to execute the following step S516; if the changed dual-card combination frequency band is still in the blacklist, then end.
  • the terminal device recovers the SA capability of the primary card and/or the SA capability of the secondary card.
  • the terminal device can re-enable the SA capability of the main card and the secondary card.
  • the terminal device initiates a TAU process to the 4G network, and indicates that the SA capability has been enabled.
  • the terminal device can reselect or switch the main card and/or secondary card to the 5G SA network through mobility means.
  • the terminal device sends a mobility update registration request to the 5G SA network.
  • the terminal device receives the SA mobility update registration completion message, and registers the main card and the secondary card to the 5G SA network.
  • the terminal device when the changed combined frequency band (4G frequency band of the main card + 4G frequency band of the secondary card) is not in the blacklist, the terminal device re-enables the SA capability of the main card and the secondary card, and registers the primary card and the secondary card with the 5G SA network, Realize NR capability recovery.
  • the main card of the terminal device in the scenario where the main card of the terminal device is registered to the 5G SA network and the main card is registered to the 5G SA network, it can be judged whether the frequency band of the dual-card combination is in the blacklist and whether the signal quality of the secondary card is If it is lower than the preset threshold value, execute the corresponding processing strategy: if the frequency band of the dual-card combination is in the blacklist and the signal quality of the secondary card is lower than the preset threshold value, the NR capability will be rolled back, such as disabling the SA capability of the main card, And register the main card to the 2G/3G/4G network to improve the signal quality of the secondary card; further, when the frequency band of the dual-card combination changes and the changed frequency band of the dual-card combination is still in the blacklist, perform NR capability again Fallback, such as disabling the SA capability of the secondary card, and registering the secondary card to the 2G/3G/4G network to exit the blacklist.
  • the SA capability of the primary card and/or secondary card can be restored, and the primary card and/or secondary card can be re-registered to the 5G SA network , to restore the NR capability to ensure the signal quality of dual cards, so as to avoid affecting the basic user experience due to problematic combination of frequency bands.
  • steps S505 to S510 describe the related process of disabling the SA capability of the primary card
  • steps S511 to S516 describe the related process of disabling the SA capability of the secondary card.
  • the SA capability of the primary card is disabled first, and then the SA capability of the secondary card, or first Whether to disable the SA capability of the secondary card and then disable the SA capability of the main card, or disable the SA capability of the primary card and the SA capability of the secondary card at the same time, and roll back the NR capability to exit the blacklist, can be determined according to the actual use requirements, and the embodiment of this application does not make any decisions on this limited.
  • the embodiments of the present application include but are not limited to the situations shown in the above Table 2, that is, including but not limited to the first to sixth embodiments above, and may also include other Possible scenarios, such as the scenario where the main card and the secondary card reside in the 5G SA network and the 5G NSA network respectively, can be implemented based on various solutions described in specific examples in the embodiments of this application.
  • this embodiment of the application can determine whether the dual-card combined frequency band is in the blacklist And whether the signal quality of the main card and/or the secondary card is lower than the preset threshold value, if the combined frequency band of the dual card is in the blacklist and the signal quality of the main card and/or the secondary card is lower than the preset threshold value, the control terminal
  • the NR capability of the device is rolled back, such as disabling the SA capability and/or releasing the NR link in the ENDC link to improve the signal quality of the dual card.
  • the methods and operations implemented by the terminal device in the foregoing method embodiments may also be implemented by components (such as chips or circuits) that can be used in the terminal device.
  • the terminal device implementing the method includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to realize the described functions for each specific application, but such realization should not be regarded as exceeding the protection scope of the present application.
  • the embodiment of the present application may divide the terminal device into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other feasible division methods in actual implementation. In the following, description will be made by taking the division of each functional module corresponding to each function as an example.
  • the embodiment of the present application further provides a corresponding device.
  • FIG. 9 is a schematic structural diagram of a terminal device 800 provided in an embodiment of the present application.
  • the terminal device 800 may be the terminal device mentioned in the foregoing embodiments.
  • the terminal device 800 may include a processor 810, an external memory interface 820, an internal memory 821, a universal serial bus (universal serial bus, USB) interface 830, a charging management module 840, a power management module 841, a battery 842, an antenna 1, and an antenna 2 , mobile communication module 850, wireless communication module 860, audio module 870, speaker 870A, receiver 870B, microphone 870C, earphone jack 870D, sensor module 880, button 890, motor 891, indicator 892, camera 893, display screen 894, and A subscriber identification module (subscriber identification module, SIM) card interface 895 and the like.
  • SIM subscriber identification module
  • the sensor module 880 may include a pressure sensor 880A, a gyroscope sensor 880B, an air pressure sensor 880C, a magnetic sensor 880D, an acceleration sensor 880E, a distance sensor 880F, a proximity light sensor 880G, a fingerprint sensor 880H, a temperature sensor 880I, a touch sensor 880J, and ambient light Sensor 880K, bone conduction sensor 880L, etc.
  • the terminal device 800 may include more or fewer components than shown, or combine some components, or separate some components, or arrange different components.
  • the illustrated components can be realized in hardware, software or a combination of software and hardware.
  • the processor 810 may include one or more processing units, for example: the processor 810 may include an application processor (application processor, AP), a modem processor (modem), a graphics processing unit (graphics processing unit, GPU), an image Signal processor (image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural network processor (neural-network processing unit, NPU )Wait. Wherein, different processing units may be independent devices, or may be integrated in one or more processors.
  • a memory may also be provided in the processor 810 for storing instructions and data.
  • the wireless communication function of the terminal device 800 may be implemented by the antenna 1, the antenna 2, the mobile communication module 850, the wireless communication module 860, a modem processor, a baseband processor, and the like.
  • Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in terminal device 800 can be used to cover single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas.
  • Antenna 1 can be multiplexed as a diversity antenna of a wireless local area network.
  • the antenna may be used in conjunction with a tuning switch.
  • the mobile communication module 850 can provide wireless communication solutions including 2G/3G/4G/5G applied on the terminal device 800 .
  • the mobile communication module 850 may include at least one filter, switch, power amplifier, low noise amplifier (low noise amplifier, LNA) and the like.
  • the mobile communication module 850 can receive electromagnetic waves through the antenna 1, filter and amplify the received electromagnetic waves, and send them to the modem processor for demodulation.
  • the mobile communication module 850 can also amplify the signal modulated by the modem processor, convert it into electromagnetic wave and radiate it through the antenna 1 .
  • at least part of the functional modules of the mobile communication module 850 may be set in the processor 810.
  • at least part of the functional modules of the mobile communication module 850 and at least part of the modules of the processor 810 may be set in the same device.
  • a modem processor may include a modulator and a demodulator.
  • the modulator is used for modulating the low-frequency baseband signal to be transmitted into a medium-high frequency signal.
  • the demodulator is used to demodulate the received electromagnetic wave signal into a low frequency baseband signal. Then the demodulator sends the demodulated low-frequency baseband signal to the baseband processor for processing.
  • the low-frequency baseband signal is passed to the application processor after being processed by the baseband processor.
  • the application processor outputs sound signals through audio equipment (not limited to speaker 870A, receiver 870B, etc.), or displays images or videos through display screen 894 .
  • the modem processor may be a stand-alone device.
  • the modem processor may be independent from the processor 810, and be set in the same device as the mobile communication module 850 or other functional modules.
  • the terminal device 800 may include two modem processors, one corresponding to 4G and the other corresponding to 5G.
  • the wireless communication module 860 can provide wireless local area networks (wireless local area networks, WLAN) (such as wireless fidelity (Wi-Fi) network), bluetooth (bluetooth, BT) and other wireless communication functions applied on the terminal device 800. solution.
  • the wireless communication module 860 may be one or more devices integrating at least one communication processing module.
  • the wireless communication module 860 receives electromagnetic waves via the antenna 2 , frequency-modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 810 .
  • the wireless communication module 860 can also receive the signal to be sent from the processor 810, frequency-modulate it, amplify it, and convert it into electromagnetic waves through the antenna 2 to radiate out.
  • the antenna 1 of the terminal device 800 is coupled to the mobile communication module 850, and the antenna 2 is coupled to the wireless communication module 860, so that the terminal device 800 can communicate with the network and other devices through wireless communication technology.
  • the wireless communication technology may include GSM, GPRS, CDMA, WCDMA, TD-SCDMA, LTE, NR, BT, WLAN, NFC, FM, and/or IR technology and the like.
  • the wireless communication module 860 is used to connect both SIM cards to the 5G SA network, or to connect one SIM card to the 5G SA network and the other SIM card to the 5G SA network under the instruction of the processor. LTE network.
  • the processor judges whether the frequency band of the dual-card combination is in the blacklist and whether the signal quality of the secondary card satisfies a preset threshold value for a dual-card user scenario supporting 5G SA mode or 5G NSA mode.
  • the NR capability of the terminal device is controlled to fall back, such as disabling the SA capability, or releasing the NR link in the ENDC link to improve the signal quality of the secondary card ; Further, when the dual-card combination frequency band changes and the changed dual-card combination frequency band is not in the blacklist, control the recovery of the NR capability of the terminal device, such as re-enabling the SA capability, or allowing the addition of ENDC links to ensure the dual-card signal quality , so as to improve the signal quality deterioration caused by the dual-card terminal equipment working in the problematic combined frequency band.
  • the wireless communication module 860 for specific operations implemented by the wireless communication module 860, reference may be made to relevant descriptions of the foregoing embodiments, and details are not repeated here.
  • the terminal device 800 implements a display function through a GPU, a display screen 894, an application processor, and the like.
  • the GPU is a microprocessor for image processing, and is connected to the display screen 894 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering.
  • Processor 810 may include one or more GPUs that execute program instructions to generate or change display information.
  • the display screen 894 is used to display images, videos and the like.
  • Display 894 includes a display panel.
  • the terminal device 800 can realize the shooting function through an ISP, a camera 893, a video codec, a GPU, a display screen 894, and an application processor.
  • the ISP is used to process the data fed back by the camera 893 .
  • Camera 893 is used to capture still images or video.
  • Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the terminal device 800 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.
  • Video codecs are used to compress or decompress digital video.
  • Internal memory 821 may be used to store computer-executable program code, which includes instructions.
  • the internal memory 821 may include an area for storing programs and an area for storing data.
  • the stored program area can store an operating system, at least one application program required by a function (such as a sound playing function, an image playing function, etc.) and the like.
  • the terminal device 800 may implement an audio function through an audio module 870, a speaker 870A, a receiver 870B, a microphone 870C, an earphone interface 870D, and an application processor. Such as music playback, recording, etc.
  • the pressure sensor 880A is used to sense the pressure signal and convert the pressure signal into an electrical signal.
  • pressure sensor 880A may be located on display screen 894 .
  • Touch sensor 880J also known as "touch panel”.
  • the touch sensor 880J can be arranged on the display screen 894, and the touch sensor 880J and the display screen 894 form a touch screen, also called “touch screen”.
  • the touch sensor 880J is used to detect a touch operation on or near it.
  • the touch sensor can pass the detected touch operation to the application processor to determine the type of touch event.
  • Visual output related to touch operations can be provided through the display screen 894 .
  • the touch sensor 880J may also be disposed on the surface of the terminal device 800 , which is different from the position of the display screen 894 .
  • the SIM card interface 895 is used for connecting SIM cards, such as SIM card 1 and SIM card 2 .
  • the SIM card can be connected to and separated from the terminal device 800 by inserting it into the SIM card interface 895 or pulling it out from the SIM card interface 895 .
  • the terminal device 800 may support 1 or N SIM card interfaces, where N is a positive integer greater than 1.
  • SIM card interface 895 can support Nano SIM card, Micro SIM card, SIM card, etc. Multiple cards can be inserted into the same SIM card interface 895 at the same time. The types of the multiple cards may be the same or different.
  • the SIM card interface 895 is also compatible with different types of SIM cards.
  • the SIM card interface 895 is also compatible with external memory cards.
  • the terminal device 800 interacts with the network through the SIM card to implement functions such as calling and data communication.
  • the terminal device 800 adopts an eSIM, that is, an embedded SIM card.
  • the eSIM card can be embedded in the terminal device 800 and cannot be separated from the terminal device 800 .
  • the SIM card is used to store user information
  • the user information may include an IMSI.
  • the terminal device 800 may use the user information as an identity to register with the network.
  • the terminal device 800 in the embodiment of the present application can be a smart phone (for example, a mobile phone equipped with an Android system or an iOS system, etc.), a tablet computer, a notebook computer, a handheld computer, a mobile internet device (MID, mobile internet device), a wearable device (such as smart watches, smart bracelets, etc.) or other devices that can access the Internet.
  • a smart phone for example, a mobile phone equipped with an Android system or an iOS system, etc.
  • a tablet computer for example, a mobile phone equipped with an Android system or an iOS system, etc.
  • a notebook computer for example, a notebook computer, a handheld computer, a mobile internet device (MID, mobile internet device), a wearable device (such as smart watches, smart bracelets, etc.) or other devices that can access the Internet.
  • MID mobile internet device
  • wearable device Such as smart watches, smart bracelets, etc.
  • FIG. 10 is a schematic structural diagram of a network device 900 provided in an embodiment of the present application.
  • the network device 900 may be the 5G base station in the foregoing embodiments.
  • the network device 900 may be the 4G base station in the above embodiments.
  • a network device 900 may include: one or more processors 901 , a memory 902 , a communication interface 903 , a transmitter 905 , a receiver 906 , a coupler 907 and an antenna 908 . These components may be connected through the bus 904 or in other ways, and FIG. 10 takes the connection through the bus as an example. in:
  • the communication interface 903 can be used for the network device 900 to communicate with other communication devices, such as terminal devices, 5GC or other network devices.
  • the communication interface 903 may be a communication interface of 5G or future new air interface.
  • the network device 900 may also be configured with a wired communication interface 903 to support wired communication, for example, the backhaul link between one network device 900 and other network devices 900 may be a wired communication connection.
  • the transmitter 905 and receiver 906 can be regarded as a wireless modem.
  • the transmitter 905 may be used to perform transmission processing on the signal output by the processor 901 .
  • Receiver 906 may be used to receive signals.
  • Antenna 908 may be used to convert electromagnetic energy in a transmission line to electromagnetic waves in free space, or to convert electromagnetic waves in free space to electromagnetic energy in a transmission line.
  • the coupler 907 can be used to divide the mobile communication signal into multiple channels and distribute it to multiple receivers 906 . Understandably, the antenna 908 of the network device may be implemented as a large-scale antenna array.
  • the memory 902 is coupled with the processor 901 for storing various software programs and/or sets of instructions.
  • the memory 902 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices or other non-volatile solid-state storage devices.
  • the memory 902 can store an operating system (hereinafter referred to as the system), such as embedded operating systems such as uCOS, VxWorks, and RTLinux.
  • the memory 902 can also store a network communication program, which can be used to communicate with one or more additional devices, one or more terminal devices, and one or more network devices.
  • the processor 901 may be used to read and execute computer-readable instructions. Specifically, the processor 901 can be used to call the program stored in the memory 902, such as the implementation program on the side of the network device 900 of the frequency band control method provided by one or more embodiments of the present application under the abnormal scenario of a dual-card terminal, and execute The program contains instructions.
  • the network device 900 shown in FIG. 10 is only an implementation manner of the embodiment of the present application. In practical applications, the network device 900 may include more or fewer components, which is not limited here.
  • the embodiment of the present application also provides a computer-readable medium, the computer-readable medium stores program codes, and when the computer program codes run on the computer, the computer executes the above aspects method in .
  • the embodiments of the present application further provide a computer program product, the computer program product including: computer program code, when the computer program code is run on the computer, the computer is made to execute the above aspects Methods.
  • a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer may include hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and memory (also called main memory).
  • the operating system of the operating system layer can be any one or more computer operating systems that realize business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer may include applications such as browsers, address books, word processing software, and instant messaging software.
  • Computer-readable media may include, but are not limited to, magnetic storage devices (such as hard disks, floppy disks, or tapes, etc.), optical disks (such as compact discs (compact disc, CD), digital versatile discs (digital versatile disc, DVD), etc. ), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), card, stick or key drive, etc.).
  • magnetic storage devices such as hard disks, floppy disks, or tapes, etc.
  • optical disks such as compact discs (compact disc, CD), digital versatile discs (digital versatile disc, DVD), etc.
  • smart cards and flash memory devices for example, erasable programmable read-only memory (EPROM), card, stick or key drive, etc.
  • Various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
  • processors mentioned in the embodiment of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits ( application specific integrated circuit (ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM).
  • RAM can be used as an external cache.
  • RAM may include the following forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM) , double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) and Direct memory bus random access memory (direct rambus RAM, DR RAM).
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous DRAM
  • double data rate SDRAM double data rate SDRAM
  • DDR SDRAM double data rate SDRAM
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory
  • Direct memory bus random access memory direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module may be integrated in the processor.
  • memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the essence of the technical solution of this application, or the part that contributes to the prior art, or the part of the technical solution can be embodied in the form of computer software products, which are stored in a storage
  • the computer software product includes several instructions, which are used to make a computer device (which may be a personal computer, server, or network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium may include, but is not limited to: various media capable of storing program codes such as U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk.

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Abstract

本申请提供了一种双卡终端异常场景下的频段控制方法及终端设备，涉及通信技术领域。通过本申请方案，针对支持5G SA模式或5G NSA模式的双卡用户场景，判断双卡组合频段是否在黑名单中以及主卡和/或副卡信号质量是否满足低于预设门限值，若双卡组合频段在黑名单中且主卡和/或副卡信号质量低于预设门限值，则控制终端设备NR能力回退，例如禁用SA能力，或者释放ENDC链接中的NR链路，以提升双卡信号质量。进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以控制终端设备NR能力恢复。本申请方案可改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。

Description

双卡终端异常场景下的频段控制方法及终端设备
本申请要求于2021年05月20日提交国家知识产权局、申请号为202110552739.3、申请名称为“双卡终端异常场景下的频段控制方法及终端设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种双卡终端异常场景下的频段控制方法及终端设备。
背景技术
目前，双卡终端设备内通常安装有两个身份识别卡(一个主卡和一个副卡)，分别占用不同频段实现通信业务。然而，在双卡终端设备中，各个器件相互配合时可能存在兼容性不足的问题，可能会影响双卡终端设备的信号质量。例如，对于支持5G制式的双卡终端设备，主卡和副卡均工作于5G频段，或者主卡和副卡分别工作于5G频段和4G/3G/2G频段，由于硬件匹配原因，导致5G频段与5G/4G/3G/2G频段不兼容或者兼容性差，因此导致双卡组合频段使用时出现设备通信性能变差，从而会影响用户基础体验。
发明内容
本申请提供一种双卡终端异常场景下的频段控制方法及终端设备，可以改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。
为达到上述目的，本申请采用如下技术方案：
第一方面，本申请提供一种双卡终端异常场景下的频段控制方法，应用于终端设备，所述终端设备支持5G独立组网SA模式和/或非独立组网NSA模式，该方法包括：当终端设备的第一身份识别卡的工作频段和第二身份识别卡的工作频段属于预设黑名单中的组合频段，且第一身份识别卡或第二身份识别卡的信号质量不满足预设信号质量条件时，禁止终端设备工作于5G新空口频段；
其中，所述禁止终端设备工作于5G NR频段，包括：
若终端设备处于5G SA模式，则关闭终端设备的5G SA能力，并将终端设备注册到第一网络，该第一网络为4G或3G或2G网络；或者，
若终端设备处于5G NSA模式，则释放终端设备的双连接ENDC链接中的NR链路。
通过本申请方案，针对支持5G SA模式或5G NSA模式的双卡用户场景，判断双卡组合频段是否在黑名单中以及主卡和/或副卡信号质量是否满足低于预设门限值，若双卡组合频段在黑名单中且主卡和/或副卡信号质量低于预设门限值，则控制终端设备NR能力回退，例如禁用SA能力，或者断开ENDC链接中的NR链路，以提升双卡信号质量，从而可以改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。
在实际实现时，可以根据不同的芯片、不同的器件分别建立对应的组合频段的黑名单，黑名单中的组合频段为频段兼容性较差的问题组合频段，在使用时可能会引起终端设备信 号质量变差。具体地，可以针对5G产品，存在5G频段与5G/4G/3G/2G频段不兼容或者兼容性差的问题，相应地可以建立5G与5G/4G/3G/2G的组合频段的黑名单。
在一种可能的实施方式中，上述预设黑名单可以包括至少一个组合频段，该至少一个组合频段中的一个组合频段可以包括与第一网络制式对应的频段，以及与第二网络制式对应的频段。其中，第一网络制式和第二网络制式可以相同，例如均为5R NR制式，也可以不同，例如可以分别为5R NR制式和4G LTE制式。
在黑名单中，组合频段可以包括两个频段，还可以包括三个频段，或者三个以上频段。
通过本申请方案，通过黑名单可以判断双卡终端设备当前所使用的工作频段是否为问题组合频段，当双卡终端设备工作于问题组合频段，且双卡终端设备信号质量不满足条件时可以执行对应策略，即禁止双卡终端设备工作于5G NR频段，从而改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。
可选地，上述至少一个组合频段中可以包括以下组合频段中的至少一个：
NR N1以及GSM B20；
NR N1以及WCDMA B8；
NR N28以及LTE B40；
NR N78以及CDMA B2；
NR N78以及NR N3；
LTE B3和NR N41的组合、以及LTE B5。
在一种可能的实施方式中，在上述禁止终端设备工作于5G NR频段之后，该双卡终端异常场景下的频段控制方法还包括：
当检测到第一身份识别卡的工作频段和/或第二身份识别卡的工作频段发生变化时，判断变化后的第一身份识别卡的工作频段和第二身份识别卡的工作频段是否属于预设黑名单中的组合频段；
当变化后的第一身份识别卡的工作频段和第二身份识别卡的工作频段不属于预设黑名单中的组合频段时，允许终端设备工作于5G NR频段。
通过上述方案，在禁止终端设备工作于5G NR频段之后，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以控制终端设备NR能力恢复，允许终端设备工作于5G NR频段，例如重新启用SA能力，或者允许ENDC链接的添加，以保证双卡信号质量。
可选地，本申请实施例还可以建立白名单，白名单中的组合频段可以为频段兼容性较好的组合频段。具体地，在禁止终端设备工作于5G NR频段之后，若双卡组合频段为白名单中的组合频段，则可以恢复终端设备NR能力。
在一种可能的实施方式中，上述若终端设备处于5G SA模式，则关闭终端设备的5G SA能力，并将终端设备注册到第一网络，包括：
在第一身份识别卡驻留于5G SA网络，第二身份识别卡驻留于4G或3G或2G网络的情况下，关闭第一身份识别卡的5G SA能力，并将第一身份识别卡注册到第一网络；或者，
在第一身份识别卡和第二身份识别卡均驻留于5G SA网络的情况下，关闭目标卡的5G SA能力，并将目标卡注册到第一网络；其中，目标卡为第一身份识别卡和/或第二身份识别卡。
可选地，上述关闭目标卡的5G SA能力，并将目标卡注册到第一网络，包括：
关闭第一身份识别卡的5G SA能力，并将第一身份识别卡注册到第一网络；
当检测到第一身份识别卡的工作频段和/或第二身份识别卡的工作频段发生变化时，判断第一身份识别卡的工作频段和第二身份识别卡的工作频段是否仍然属于预设黑名单中的组合频段；
当第一身份识别卡的工作频段和第二身份识别卡的工作频段仍然属于预设黑名单中的组合频段时，关闭第二身份识别卡的5G SA能力，并将第二身份识别卡注册到第一网络。
在一种可能的实施方式中，若终端设备处于5G NSA模式，则释放终端设备的ENDC链接中的NR链路，包括：
在第一身份识别卡驻留于5G NSA网络，第二身份识别卡驻留于4G或3G或2G网络的情况下，释放第一身份识别卡对应的ENDC链接；或者，
在第一身份识别卡和第二身份识别卡均驻留于5G NSA网络的情况下，释放第一身份识别卡和第二身份识别卡中至少一个身份识别卡对应的ENDC链接中的NR链路。
可选地，上述释放第一身份识别卡和第二身份识别卡中至少一个身份识别卡对应的ENDC链接，包括：
释放第一身份识别卡对应的ENDC链接；
当检测到第一身份识别卡的工作频段和/或第二身份识别卡的工作频段发生变化时，判断第一身份识别卡的工作频段和第二身份识别卡的工作频段是否仍然属于预设黑名单中的组合频段；
当第一身份识别卡的工作频段和第二身份识别卡的工作频段仍然属于预设黑名单中的组合频段时，释放第二身份识别卡对应的ENDC链接。
在一种可能的实施方式中，在上述释放终端设备的ENDC链接中的NR链路之后，该双卡终端异常场景下的频段控制方法还包括：禁止终端设备再次添加ENDC链接。
在一种可能的实施方式中，可以通过切换方式将终端设备注册到第一网络，也可以通过重定向方式将终端设备注册到第一网络。
示例性地，在本申请实施例中，5G基站可以根据终端能力和网络部署情况，触发终端设备通过切换的方式(handover to LTE)或者重定向的方式(redirect to LTE)从5G SA网络回落到LTE网络。终端设备具体使用哪一种方式回落到LTE网络，由5G SA网络决定。
在实际实现时，终端设备可以搜索LTE网络，并向LTE网络发起跟踪区更新TAU流程，并指示终端设备的5G SA能力已关闭。终端设备从第一网络接收TAU完成消息；以及响应于TAU完成消息，终端设备注册到LTE网络。
在一种可能的实施方式中，上述释放终端设备的ENDC链接，包括：终端设备向5G NSA网络发起辅小区群SCG失败流程；终端设备从5G NSA网络接收SCG释放消息；以及响应于SCG释放消息，终端设备释放ENDC链接中的NR链路。
在一种可能的实施方式中，上述允许终端设备工作于5G NR频段，包括：
若终端设备处于5G SA模式，则重新开启终端设备的5G SA能力；
或者，若终端设备处于5G NSA模式，则允许终端设备添加ENDC链接。
在一种可能的实施方式中，在上述重新开启终端设备的5G SA能力之后，该双卡终端异常场景下的频段控制方法还包括：终端设备向LTE网络发起TAU流程，并指示终端设 备的5G SA能力已开启。
在一种可能的实施方式中，在上述重新开启终端设备的5G SA能力之后，该双卡终端异常场景下的频段控制方法还包括：终端设备通过切换方式或者重定向方式重新注册到5G SA网络。
在一种可能的实施方式中，终端设备可以向5G SA网络发送移动性更新注册请求，终端设备从5G SA网络接收移动性更新注册完成消息；以及响应于移动更新注册完成消息，终端设备注册到5G SA网络。
在一种可能的实施方式中，上述第一身份识别卡为主卡，上述第二身份识别卡为副卡；或者，第一身份识别卡为副卡，第二身份识别卡为主卡。
第二方面，本申请提供一种双卡终端异常场景下的频段控制装置，该装置包括用于执行上述第一方面中的方法的单元。该装置可对应于执行上述第一方面中描述的方法，该装置中的单元的相关描述请参照上述第一方面的描述，为了简洁，在此不再赘述。
其中，上述第一方面描述的方法可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块或单元。例如，处理模块或单元、显示模块或单元等。
第三方面，本申请提供一种终端设备，所述终端设备包括处理器，处理器与存储器耦合，存储器用于存储计算机程序或指令，处理器用于执行存储器存储的计算机程序或指令，使得第一方面中的方法被执行。例如，处理器用于执行存储器存储的计算机程序或指令，使得该装置执行第一方面中的方法。
第四方面，本申请提供一种计算机可读存储介质，其上存储有用于实现第一方面中的方法的计算机程序(也可称为指令或代码)。例如，该计算机程序被计算机执行时，使得该计算机可以执行第一方面中的方法。
第五方面，本申请提供一种芯片，包括处理器。处理器用于读取并执行存储器中存储的计算机程序，以执行第一方面及其任意可能的实现方式中的方法。可选地，所述芯片还包括存储器，存储器与处理器通过电路或电线连接。
第六方面，本申请提供一种芯片***，包括处理器。处理器用于读取并执行存储器中存储的计算机程序，以执行第一方面及其任意可能的实现方式中的方法。可选地，所述芯片***还包括存储器，存储器与处理器通过电路或电线连接。
第七方面，本申请提供一种计算机程序产品，所述计算机程序产品包括计算机程序(也可称为指令或代码)，所述计算机程序被计算机执行时使得所述计算机实现第一方面中的方法。
可以理解的是，上述第二方面至第七方面的有益效果可以参见上述第一方面中的相关描述，在此不再赘述。
附图说明
图1为本申请实施例涉及的双卡终端设备的结构架构图；
图2为本申请实施例提供的双卡终端异常场景下的频段控制方法的流程示意图；
图3为本申请实施例提供的在终端设备注册到NSA网络场景中双卡终端异常场景下的频段控制方法的流程示意图之一；
图4为本申请实施例提供的在终端设备注册到NSA网络场景中双卡终端异常场景下 的频段控制方法的流程示意图之二；
图5为本申请实施例提供的在终端设备注册到NSA网络场景中双卡终端异常场景下的频段控制方法的流程示意图之三；
图6为本申请实施例提供的在终端设备注册到SA网络场景中双卡终端异常场景下的频段控制方法的流程示意图之一；
图7为本申请实施例提供的在终端设备注册到SA网络场景中双卡终端异常场景下的频段控制方法的流程示意图之二；
图8为本申请实施例提供的在终端设备注册到SA网络场景中双卡终端异常场景下的频段控制方法的流程示意图之三；
图9为本申请实施例提供的终端设备的结构示意图；
图10为本申请实施例提供的网络设备的结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本文中术语“和/或”，是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。本文中符号“/”表示关联对象是或者的关系，例如A/B表示A或者B。
本文中的说明书和权利要求书中的术语“第一”和“第二”等是用于区别不同的对象，而不是用于描述对象的特定顺序。例如，第一身份识别卡和第二身份识别卡等是用于区别不同的身份识别卡，而不是用于描述身份识别卡的特定顺序。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
在本申请实施例的描述中，除非另有说明，“多个”的含义是指两个或者两个以上，例如，多个处理单元是指两个或者两个以上的处理单元等；多个元件是指两个或者两个以上的元件等。
本申请实施例的技术方案可以应用于各种通信***，例如：全球移动通信(global system for mobile communications，GSM)***、码分多址(code division multiple access，CDMA)***、宽带码分多址(wideband code division multiple access，WCDMA)***、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)***、LTE频分双工(frequency division duplex，FDD)***、LTE时分双工(time division duplex，TDD)、通用移动通信***(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信***、5G***或新无线(new radio，NR)等。
终端设备，包括向用户提供语音和/或数据连通性的设备，具体的，包括向用户提供语音的设备，或包括向用户提供数据连通性的设备，或包括向用户提供语音和数据连通性的 设备。例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(radio access network，RAN)设备与核心网设备进行通信，与RAN交换语音或数据，或与RAN交互语音和数据。该终端设备可以包括用户设备(user equipment，UE)、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、车到一切(vehicle to everything，V2X)终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、用户单元(subscriber unit)、用户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位***(global positioning system，GPS)、激光扫描器等信息传感设备。本申请实施例中，终端设备还可以包括中继(relay)。或者理解为，能够与基站进行数据通信的都可以看作终端设备。
本申请实施例中，用于实现终端设备的功能的装置可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片***，该装置可以被安装在终端设备中。本申请实施例中，芯片***可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的技术方案中，以用于实现终端的功能的装置是终端设备为例，描述本申请实施例提供的技术方案。
本申请实施例中的网络设备可以是具有能够为终端设备提供随机接入功能的设备或可设置于该设备的芯片。该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线保真(wireless fidelity，WIFI)***中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为第五代(the fifth generation,5G)***，例如，新空口(new radio,NR)中的5G基站(gNB)或传输点(TRP或TP)，5G***中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，例如基带单元(BBU)或分布式单元(distributed unit,DU)等。5G基站可以包括各种形式的宏基站、微基站、中继站、接入点等等。在采用不同的无线接入技术的***中，具备基站功能的设备的名称可能会有所不同。
在一些部署中，gNB可以包括集中式单元(centralized unit,CU)和分布式单元(distributed unit,DU)。gNB还可以包括有源天线单元(active antenna unit,AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能。比如，CU负责处理非实时协议和服务， 实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中一项或多项的设备。此外，可以将CU划分为RAN中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
为便于理解本申请实施例，以下对本申请实施例的部分用语进行解释说明，以便于本领域技术人员理解。
1)双卡终端设备
双卡终端设备内安装有两个客户识别模块(subscriber identity module，SIM)卡，其中一个SIM卡可认为是主SIM卡，另一个SIM卡可认为是副SIM卡。双卡终端设备可以为双卡双待(dual SIM dual standby，DSDS)终端设备或者双卡双通设备。为了便于描述，本申请实施例中将SIM卡以及其演进都统称为SIM卡。例如，在一些实施例中，SIM卡可以是全球用户识别卡(universal subscriber identity module，USIM)，还可以是eSIM卡等。为了便于说明，以下以双卡终端设备包括SIM卡1和SIM卡2进行示例性描述。
SIM卡可以包括签约用户信息，如国际移动用户标识(international mobile subscriber identity，IMSI)或临时移动用户标识(temporary mobile subscriber identity，TMSI)等，用于用户身份识别。从网络侧的角度来看，不同的SIM卡在逻辑上对应网络侧的不同通信实体，例如对于网络侧来说，双卡终端设备可以看作两个通信实体或者看作两个用户设备。
需要说明的是，双卡终端设备中的两个SIM卡可以属于同一个运营商也可以属于不同的运营商，本申请实施例对此不作任何限定。此外，在实际应用中，一个终端设备可以支持两个以上SIM卡，具体可以根据实际使用需求确定，本申请实施例不作限定。
2)SA组网和NSA组网
3GPP针对5G新空口(new radio，NR)组网定义了两种方案，分别是独立组网(standalone，SA)和非独立组网(non-standalone，NSA)。其中，NSA组网是指由4G独立部署控制面(4G网络承载控制信令)，5G和4G共同部署用户面(5G网络和4G网络均承载用户面数据)或者5G独立部署用户面(仅5G网络承载用户面数据)。SA组网是指5G独立部署控制面和用户面，即5G网络独立承载控制信令和用户面数据。
SA网络，即以SA组网模式进行组网的5G网络。NSA网络，即以NSA组网模式进行组网的5G网络。由于网络和终端存在形式多样的各种类型，因此目前存在5G小区或终端只支持NSA、只支持SA或者同时支持NSA和SA的情形。
其中，在开机附着场景或者移动更新注册场景中，终端设备在向网络发送用户接入请求或注册请求时，向网络上报5G能力，例如通过能力(capability)字段携带网络能力信息来指示终端设备是否支持NSA模式和/或SA模式。相应地，网络可以基于该网络能力信息，判断终端设备是否支持NSA模式和/或SA模式。
在5G***(5G system，5GS)的部署方式为SA模式的情况下，5GS包括5G基站和 5G核心网(5G core network，5GC)，5G基站连接至5GC。
5G基站可以是下一代基站(next generation NodeB，gNB)。gNB可以连接到终端设备，并和该终端设备800之间采用新无线(new radio，NR)接入技术相互通信，即gNB和终端设备之间通过NR链路通信。
5GC用于交换、转发、接续、路由数据。5GC中的网元为功能性的虚拟单元，可包括但不限于：用于接入和移动管理功能的单元(access and mobility management function，AMF)、用于会话管理功能的单元(session management function，SMF)、用于统一数据管理的网元(unified data management，UDM)等。
在5G***(5G system，5GS)的部署方式为NSA模式的情况下，终端设备可以与4G基站和5G基站之间建立ENDC链接。
其中，4G基站可以是演进型基站(evolved Node B，eNB)。在本申请实施例中，终端设备可以连接到4G基站，与4G基站之间通过LTE链路通信。
4G基站连接至4G核心网(evolved packet core，EPC)。EPC中主要包括以下网元：移动性管理实体(mobility management entity，MME)、服务网关(serving gateway，SGW)、分组数据网络网关(packet data network gateway，PGW)、归属签约用户服务器(home subscriber server，HSS)和应用服务器等。MME的主要功能包括接入控制、移动性管理、附着与去附着、会话管理(例如承载的建立、修改和释放)等。SGW的主要用于数据包的路由和转发。PGW的主要功能包括基于用户的包过滤功能、合法侦听功能IP地址分配功能等。HSS用于存储用户签约信息、用户的签约数据及移动用户的位置信息等。
3)ENDC链接(E-UTRA-NR dual connectivity，ENDC)
当前，在NSA模式下，终端设备与4G基站和5G基站建立双连接，称为ENDC链接，即将4G基站作为主基站，传输信令；将5G基站作为扩展增强的数据传输通道，从而提高数据传输率。此时，LTE基站eNB是主节点(master node，MN)，NR基站gNB是辅节点(secondary node，SN)；LTE小区为主小区群(master cell group，MCG)，NR小区为辅小区群(secondary cell group，SCG)。
其中，E-UTRA(evolved-UMTS terrestrial radio access，演进的UMTS陆地无线接入网络)对应4G网络。
4)网络注册
终端设备要获取网络提供的服务，首先需要向网络进行注册，即注册入网。通常网络注册可以划分为下述两种类型：
(a)初始注册：当终端设备开机时会触发初始注册。例如，假设终端设备当前处于5G SA网络中，当终端设备开机时，终端设备会发起向5G SA网络注册，实现初始注册。
(b)移动更新注册(也称为移动注册)：当终端设备离开当前注册区域进入一个新的跟踪小区(tracking area，TA)时，终端设备可以发起跟踪区域更新(tracking area update，TAU)过程，进行移动更新注册。例如，当终端设备从当前注册的LTE网络移动到5G SA网络中时，终端设备会发起向5G SA网络注册，实现移动更新注册。
图1示出了本申请实施例所涉及的双卡终端设备的结构示意图。如图1所示，双卡终端设备可以包括天线11，射频前端模块12(例如射频芯片)，基带处理模块13(例如基带芯片)，SIM卡1以及SIM卡2。需要说明的是，图1所示的部件并不构成对终端设备 的具体限定，终端设备还可以包括比图示更多或更少的部件。例如，终端设备可以包括功放模块、射频后端模块和存储模块等，为了便于说明，图1中未示出这些模块。
基于图1所示的结构，由于各个模块(例如射频芯片和基带芯片)兼容性不足或者相互配合配置时存在电路性问题，因此会影响双卡终端设备的信号质量。例如，针对5G产品，由于硬件匹配原因，双卡终端设备存在5G频段与5G/4G/3G/2G频段不兼容或者兼容性差的问题，主卡的某些频段与副卡的某些频段在组合后导致整体性能变差，以下将导致整体性能变差的主副卡组合频段称为问题组合频段。在问题组合频段场景下，双卡终端设备的主卡和/或副卡信号质量可能会受影响而变差，从而会影响用户基础体验。
鉴于此，本申请提供一种双卡终端异常场景下的频段控制方法，在支持5G SA模式或5G NSA模式的双卡终端设备使用过程中，当双卡组合频段在黑名单中且主卡和/或副卡信号质量不满足预设信号质量条件时，控制终端设备的NR能力回退，例如禁用SA能力，或者断开ENDC链接并禁止(抑制)ENDC链接的添加，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，控制终端设备的NR能力恢复，例如重新启用SA能力，或者停止抑制ENDC链接的添加，以保证双卡信号质量，从而避免由于问题组合频段而影响用户基础体验的问题。
需要说明的是，本申请实施例中，主卡和/或副卡信号质量不满足预设信号质量条件是指，主卡信号质量低于主卡的预设门限值，或者副卡信号质量低于副卡的预设门限值，或者，主卡信号质量低于主卡的预设门限值并且副卡信号质量低于副卡的预设门限值。为了便于说明，以下以副卡信号质量低于副卡的预设门限值为例，对本申请实施例提供的方法进行示例性地说明。
在本申请实施例中，针对支持5G的终端设备，可以根据5G的不同模式(NSA模式或者SA模式)采用不同的NR能力回退方案，具体方案如下：
(1)建立组合频段的黑名单。
首先，根据不同的芯片、不同的器件分别建立对应的组合频段的黑名单，黑名单中的组合频段为频段兼容性较差的问题组合频段，在使用时可能会引起终端设备信号质量变差，例如下表1中以黑名单列表形式表示。具体地，针对5G产品，存在5G频段与5G/4G/3G/2G频段不兼容或者兼容性差的问题，相应地可以建立5G+5G/4G/3G/2G的组合频段的黑名单，如下表1所示。
表1
Figure PCTCN2022081445-appb-000001
如表1所示，在黑名单中，组合频段可以包括两个频段，例如网络制式1下的频段1和网络制式2下的频段2。其中，网络制式1和网络制式2可以是相同网络制式，例如网络制式1和网络制式2均为NR。或者，网络制式1和网络制式2也可以是不同网络制式，例如网络制式1为NR，网络制式2为LTE/WCDMA/CDMA/GSM。
其中，NR网络也称为5G网络，对应频段可称为5G频段或NR频段。LTE网络也称为4G网络，对应频段可称为4G频段或LTE频段。WCDMA或CDMA网络也称为3G网络，对应频段可称为3G频段。GSM网络也称为2G网络，对应频段可称为2G频段。
此外，组合频段还可以包括三个频段，或者三个以上频段，具体可以根据实际使用需求确定，本申请实施例不作限定。
在一些实施例中，对于SIM卡1注册到5G SA网络，SIM卡2注册到5G SA/4G/3G/2G网络的场景，双卡组合频段可能为1)NR频段+NR频段，2)NR频段+LTE频段，3)NR频段+3G频段，4)NR频段+2G频段，如表1中的索引1至索引5对应的组合频段所示。
示例性地，以双卡组合频段为NR频段+LTE频段举例进行说明，主卡注册到SA网络，对应频段为NRN28，副卡注册到LTE网络，对应频段为LTE B40；相应地，双卡组合频段为NRN28+LTE B40。通过性能测试，若检测到NRN28+LTE B40组合频段情况下，终端设备(例如副卡)信号强度低于预设门限值，即这一组合频段兼容性能差，则如表1中的索引3所示，可以将NRN28+LTE B40这一组合频段加入黑名单列表中。
再示例性地，以双卡组合频段为NR频段+NR频段举例进行说明，主卡注册到SA网络，对应频段为NRN78，副卡注册到SA网络，对应频段为NRN3；相应地，双卡组合频段为NRN78+NRN3。通过性能测试，若检测到NRN78+NR B3组合频段情况下，终端设备(例如副卡)信号强度低于预设门限值，即这一组合频段兼容性能差，则如表1中的索引5所示，可以将NRN78+NRN3这一组合频段加入黑名单列表中。
在另一些实施例中，对于SIM卡1注册到5G NSA网络，SIM卡2注册到5G NSA/4G/3G/2G网络的场景，双卡组合频段可能为1)ENDC组合频段+ENDC组合频段，2)ENDC组合频段+LTE频段，3)ENDC组合频段+3G频段，4)ENDC组合频段+2G频段。在此情况下，双卡组合频段可以包括三个频段，或者三个以上频段。
示例性地，以双卡组合频段为ENDC组合频段+LTE频段举例进行说明，主卡注册到5G NSA网络，添加有ENDC链接，ENDC组合频段为(LTE B3+NR N41)，副卡注册到LTE网络，对应频段为LTE B5；相应地，双卡组合频段为(LTE B3+NR N41)+LTE B5。若通过测试检测到(LTE B3+NR N41)+LTE B5组合频段情况下，终端设备(例如副卡)信号强度低于预设门限值，即这一组合频段兼容性能差，则如表1中的索引6所示，可以将(LTE B3+NR N41)+LTE B5这一组合频段加入黑名单列表中。
(2)当检测到双卡组合频段在黑名单中时，触发NR能力回退。
针对支持5G SA模式或5G NSA模式的双卡用户场景，可以实时判断双卡的组合频段是否在黑名单中并且副卡的信号质量是否比较差，如果在黑名单列表中且副卡信号质量低于预设门限值，那么根据5G的网络模式(SA或者NSA)，采用对应的方法进行NR能力回退。
在一些实施例中，当双卡组合频段落入黑名单中时，可以根据信号情况判断是否需要回退NR能力。示例性地，在双卡组合频段落入黑名单后，若发现副卡信号质量较差则进 行NR能力回退，例如禁止NR频段或者直接禁用NR能力。
在另一些实施例中，当检测到终端设备的主卡或副卡信号质量较差时，可以进一步检测双卡组合频段是否落入黑名单中，并且在双卡组合频段落入黑名单的情况下，控制NR能力回退，例如禁用NR频段或者直接禁用NR能力。
在实际实现时，上述控制NR能力回退的具体实现方式可以包括：
a)对于终端设备(主卡和/或副卡)接入5G NSA网络的情况，可以对应地拆除ENDC链接，禁用NR频段，并抑制ENDC添加。例如，对于主卡注册到5G NSA网络，副卡注册到5G NSA/4G/3G/2G的场景，若主卡和/或副卡存在ENDC链接，则拆除主卡和/或副卡的ENDC链接，并抑制ENDC添加。
b)对于终端设备(主卡和/或副卡)接入5G SA网络的情况，可以对应地禁用SA能力，并从5G网络回落到4G/3G/2G网络。例如，对于主卡注册到5G SA网络，副卡注册到5G SA/4G/3G/2G场景，禁用主卡和/或副卡的SA能力。
在触发NR能力回退之后，由于终端设备的移动性，双卡组合频段发生变化，例如主卡频段发生变化，或者副卡频段发生变化，或者主卡和副卡频段均发生变化。进一步再判断发生变化后的双卡组合频段是否还在黑名单中。
通过本申请方案，通过黑名单可以判断双卡终端设备当前所使用的工作频段是否为问题组合频段，当双卡终端设备工作于问题组合频段，且双卡终端设备信号质量不满足条件时可以执行对应策略，即抑制双卡终端设备工作于5G NR频段，从而改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。
(3)当检测到双卡组合频段不在黑名单时，触发停止NR能力回退，实现NR能力恢复。
当检测到变化后的双卡组合频段不在黑名单时，根据5G的网络模式(SA或者NSA)，采用对应的方法进行NR能力恢复。
对于NSA模式，若ENDC链接被抑制添加，则停止抑制，即允许添加ENDC链接。
对于SA模式，若SA能力被禁用，则停止禁用，即重新开启SA能力。
需要说明的是，本申请实施例还可以建立白名单，白名单中的组合频段可以为频段兼容性较好的组合频段。具体地，在抑制终端设备工作于5G NR频段之后，若双卡组合频段为白名单中的组合频段，则可以恢复终端设备NR能力。
下面结合上述(2)和(3)，分别对NSA模式和SA模式下本申请实施例提供的方案进行举例说明。
示例性地，如果5G网络模式是NSA，且副卡信号质量低于预设门限值，则终端设备可以发起SCG失败(SCG failure)流程，触发网络释放ENDC链接，即断开ENDC链接中的NR链路，并抑制后续再添加ENDC链接；在双卡组合频段发生变化并且变化后的组合频段不在黑名单列表中，则停止抑制，后续可以通过网络配置再添加ENDC链接。
其中，终端设备发起SCG failure的流程可以包括：终端设备与5G NSA网络之间交互信令，进行无线资源控制(radio resource control，RRC)重配置，终端设备向5G NSA网络发送SCG failure信息，然后5G NSA网络向终端设备下发SCG释放(SCG release)信息，释放ENDC链接，即断开ENDC链接中的NR链路。
再示例性地，如果5G网络模式是SA，且副卡信号差于预制的门限值，则终端设备可 以主动禁用或关闭SA能力，然后触发在低制式网络中搜网，以搜寻到LTE网络为例，在LTE网络上发起TAU流程时向LTE网络通知终端设备不支持SA能力；进一步地，若双卡组合频段发生变化并且变化后的组合频段不在黑名单列表中，则终端设备可以重新开启SA能力，并通过TAU流程向LTE网络通知SA能力恢复，然后可以通过网络配置更新注册到SA网络。
在实际实现时，副卡信号质量的预设门限值可以由***预先设置，并作为出厂设置参数，存储于终端设备中。可选地，不同的网络制式可以采用不同的预设门限值，具体可以根据实际使用需求确定，本申请实施例不作限定。示例性地，对于NR网络制式或LTE网络制式，门限值可以预设为-100分贝(dB)；对于2G或3G网络制式，门限值可以预设为-80dB。
需要说明的是，本申请方案同样适用于其他由于各种原因导致的双卡组合频段出现的性能问题，比如由于特定频段的网络限制等原因可能会导致双卡组合频段性能变差。对于这一类场景，同样可以采用本申请方法，判断双卡组合频段是否在黑名单中以及副卡信号质量是否满足低于预设门限值，若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则控制NR能力回退，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以控制NR能力恢复，以保证双卡信号质量，从而可以避免由于问题组合频段而影响用户基础体验的问题。
下面结合图2，示例性地说明本申请实施例提供的双卡终端异常场景下的频段控制方法。如图2所示，该方法包括下述的步骤S101至S111。
S101，建立组合频段的黑名单。
如上所述，若检测到两个或两个以上的频段在组合使用时，使得设备通信性能变差，则将这一类组合频段添加到黑名单中。
S102，判断副卡信号强度是否低于预设门限值。
若副卡信号强度低于预设门限值，则继续执行下述的步骤S103；若副卡信号强度高于或等于预设门限值，则返回继续执行S102。
S103，判断双卡组合频段是否在黑名单中。
若双卡组合频段在黑名单中，则继续执行下述的步骤S104；若双卡组合频段不在黑名单中，则结束。
需要说明的是，本申请实施例不限定S102和S103的执行顺序。例如，终端设备可以先判断双卡组合频段是否在黑名单中，在判断双卡组合频段在黑名单之后再判断副卡信号强度是否低于预设门限值；或者，终端设备可以同时判断双卡组合频段是否在黑名单中以及副卡信号强度是否低于预设门限值。具体可以根据实际使用需求确定，本申请实施例不作限定。为了便于说明，本申请实施例中以先判断副卡信号强度是否低于预设门限值，再判断双卡组合频段是否在黑名单中为例进行说明。
基于上述的S102和S103，当终端设备判断双卡组合频段在黑名单中并且副卡信号强度低于预设门限值时，继续执行下述的步骤S104。
S104，判断5G网络模式是NSA模式还是SA模式。
在一些实施例中，终端设备可以通过附着(attach)到网络的过程，或者，通过TAU过程向网络(例如MME)上报网络能力信息，该网络能力信息中的信息单元(information  element，IE)可包括比特位“N1mode”。当该比特位“N1mode”取第一值(例如0)时，该网络能力信息用于指示终端设备不支持5G以及SA组网方式，相当于终端设备屏蔽了自身支持NR的能力(disable NR)。当比特位“N1mode”取第二值(例如1)时，该网络能力信息用于指示终端设备支持5G以及SA组网方式。如此，网络可以获知5G网络模式是NSA模式还是SA模式。
S105，若终端能力的5G网络模式是SA模式，则禁用SA能力，并搜索低制式网络(例如LTE网络)进行注册。
可选地，终端设备从5G SA网络回落到LTE网络的方式可包括以下两种：
(1)终端设备可以在禁用SA能力的情况下，自主连接到4G基站，并注册到EPC。
具体的，终端设备可以先断开和5G SA网络的连接，再自主连接到LTE网络。具体的，终端设备可以自主在LTE频带上搜索到4G基站的小区，并选择小区进行驻留。终端设备驻留到4G基站的小区后，会执行和该小区之间的建立RRC连接的过程(RRC connection establishment)和随机接入过程(random access procedure)，从而和该小区建立连接，即连接到4G基站。终端设备连接到4G基站后，可以注册到EPC，从而使用EPC提供的服务。
也就是说，通过第(1)种方式，终端设备自主从5G SA网络回落到LTE网络。
(2)终端设备可以在禁用SA能力的情况下，在5G基站的触发下回落到LTE网络。
具体的，终端设备可以在禁用SA能力的情况下，根据私有门限向5G基站上报关于LTE的B1事件和/或B2事件，5G基站将响应于该关于LTE的B1事件和/或B2事件，在5G基站的触发下回落到LTE网络。
关于LTE的B1事件和B2事件是用于启动异***切换的事件。这里，该异***为LTE***。其中，终端设备在LTE网络邻区质量高于绝对门限1时，上报关于LTE的B1事件。终端设备在当前连接到的5G基站的服务小区质量低于绝对门限2，且LTE网络邻区质量高于绝对门限3时，上报关于LTE的B2事件。也就是说，当终端设备向5GC上报关于LTE的B1事件或者B2事件后，5GC将触发终端设备从5G SA网络切换到LTE网络。
在本申请实施例中，终端设备可以设置私有门限，该私有门限可以设置为终端设备禁用SA能力。也就是说，只要终端设备禁用SA能力，则该终端设备向5G基站上报关于LTE的B1事件和/或B2事件，从而由5G基站启动异***切换，触发终端设备从5G SA网络回落到LTE网络。
在本申请实施例中，5G基站可以根据终端能力和网络部署情况，触发终端设备通过切换的方式(handover to LTE)或者重定向的方式(redirect to LTE)从5G SA网络回落到LTE网络。终端设备具体使用哪一种方式回落到LTE网络，由5G SA网络决定。
使用切换方式(handover to LTE)时，终端设备在连接到LTE网络后再断开和5G SA网络的连接，这种方式不涉及空口资源释放，效率较高。使用重定向方式(redirect to LTE)时，终端设备先断开和5G SA网络的连接，再连接到LTE网络，这种方式会释放空口资源，后续需要重建空口资源。
其中，在禁用SA能力的情况下，终端设备可以将网络能力信息中的比特位“N1mode”取第一值(例如0)，该网络能力信息用于指示终端设备不支持5G以及SA组网方式，以避免终端设备在禁用SA能力的情况下，从5G SA网络回落至LTE网络后，又在EPC的 触发下从LTE网络切换到5G SA网络。
S106，若终端能力的5G网络模式是NSA模式，则释放ENDC链接，并抑制ENDC链接添加。
S107，终端设备的主卡和/或副卡的工作频段发生变化。
具体是主卡的工作频段发生变化，还是副卡的工作频段发生变化，还是主卡和副卡的工作频段均发生变化，与上述S105和S106的执行动作有关，具体参见下文详细描述。
S108，判断双卡组合频段是否仍然在黑名单中。
若双卡组合频段不在黑名单中，则继续执行下述的步骤S109；若双卡组合频段仍然在黑名单中，则返回继续执行上述的S107。
S109，判断5G网络模式是NSA模式还是SA模式。
S110，若5G网络模式是SA模式，则重新开启SA能力。
这里，终端设备可以将网络能力信息中的比特位“N1mode”取第二值(例如1)，该网络能力信息用于指示终端设备支持5G以及SA组网方式。
当变化后的双卡组合频段不在黑名单中时，重新开启SA能力，实现NR能力恢复。
S111，若5G网络模式是NSA模式，则允许添加ENDC链接。
当变化后的双卡组合频段不在黑名单中时，停止对ENDC链接添加进行抑制，进而实现NR能力恢复。
在S110或S111之后，可以继续循环执行上述的步骤S102至S109。
下面以具体的实施例对本申请的技术方案以及本申请的技术方案如何解决上述技术问题进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。
需要说明的是，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构进行特别限定，只要能够通过运行记录有本申请实施例提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可。例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备(例如上述的4G基站和/或EPC，或者5G基站和/或5GC)，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
表2
Figure PCTCN2022081445-appb-000002
表2示出了双卡终端设备中主卡和副卡分别驻留网络的可能组合情况。参照表2，主卡和副卡分别驻留网络可能相同，也可能不同。在不同情况下，本申请实施例提供的双卡终端异常场景下的频段控制方法的具体实现方式不同。本申请实施例包括但不限于表2所 列举的场景。针对5G网络模式是NSA模式的场景，下面结合图3、图4和图5，以下述的第一实施例、第二实施例和第三实施例详细说明本申请实施例提供的双卡终端异常场景下的频段控制方法的具体实现方式。
第一实施例
图3为针对主卡驻留于5G NSA网络以及副卡驻留于2G/3G/4G网络的场景，本申请实施例提供的双卡终端异常场景下的频段控制方法的信令流程图，具体包括下述的步骤S201A-S212A。
S201A，终端设备的主卡注册到5G NSA网络。
终端设备在将主卡连接到5G NSA网络的过程中，首先连接到4G基站，再附着并注册到EPC。
S202A，终端设备的副卡注册到2G/3G/4G网络。
其中，当副卡注册到2G网络时，副卡的工作频段为2G频段。当副卡注册到3G网络时，副卡的工作频段为3G频段。当副卡注册到4G网络时，副卡的工作频段为4G频段。
以副卡注册到4G网络为例，副卡首先连接到4G基站，再附着并注册到EPC。
S203A，终端设备激活主卡ENDC链接。
其中，当主卡连接到5G NSA网络，且ENDC链接被激活时，主卡可以与4G基站和5G基站建立双连接，在此情况下主卡的工作频段包括5G频段和4G频段。
S204A，终端设备判断副卡信号强度是否低于预设门限值。
当副卡信号强度低于预设门限值时，双卡终端设备处于异常场景。
S205A，终端设备判断双卡组合频段是否在黑名单中。
基于上述S204A和S205A，当终端设备判断双卡组合频段在黑名单中并且副卡信号强度低于预设门限值时，继续执行下述的步骤S206A。
假设主卡的工作频段为LTE B3+NR N41，副卡的工作频段为LTE B5。参考上述表1可知，黑名单中包括(LTE B3+NR N41)+LTE B5。因此，终端设备可以判断双卡组合频段在黑名单中。
S206A，终端设备向NSA网络发起SCG失败(SCG failure)流程。
S207A，终端设备接收NSA网络下发的SCG释放(SCG release)消息。
S208A，终端设备释放主卡ENDC链接。
其中，终端设备释放主卡ENDC链接中的NR链路。
S209A，终端设备抑制主卡添加ENDC链接。
具体地，当主卡5G及4G频段+副卡2G/3G/4G频段组成的组合频段在黑名单中，且副卡信号质量低于预设门限值时，终端设备发起SCG failure流程，触发网络释放ENDC链接中的NR链路，并抑制ENDC链接添加。
S210A，主卡的工作频段发生变化。
当主卡已建立的ENDC链接被释放时，主卡的工作频段发生变化，其中5G频段被禁用，保留4G频段继续使用。这样，主卡5G及4G频段+副卡2G/3G/4G频段组成的组合频段，变化为主卡4G频段+副卡2G/3G/4G频段组成的组合频段。
示例性地，假设主卡的工作频段为LTE B3+NR N41，那么在释放主卡ENDC链接中的NR链路之后，主卡的工作频段变为LTE B3。此时，因此双卡组合频段由(LTE B3+NR  N41)+LTE B5变化为(LTE B3+LTE B5)。
S211A，终端设备判断双卡组合频段是否仍然在黑名单中。
若变化后的双卡组合频段(主卡4G频段+副卡2G/3G/4G频段)不在黑名单中，则继续执行下述的步骤S212A；若变化后的双卡组合频段仍然在黑名单中，则返回继续执行上述的S210A。
示例性地，参考上述表1可知，黑名单中不包括(LTE B3+LTE B5)，因此当前双卡组合频段不在黑名单中，通过上述频段控制策略，相应地终端设备的副卡信号质量提升，如此可以改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。
S212A，终端设备允许主卡添加ENDC链接。
具体地，当变化后的组合频段(主卡4G频段+副卡2G/3G/4G频段)不在黑名单中时，终端设备触发停止对ENDC链接添加进行抑制，因此允许主卡重新建立ENDC链接，继续使用5G频段，实现NR能力恢复。
通过第一实施例提供的方案，在终端设备的主卡注册到5G NSA网络，副卡注册到2G/3G/4G网络的场景中，可以通过判断双卡组合频段是否在黑名单中以及副卡信号质量是否低于预设门限值，执行对应的处理策略：若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则进行NR能力回退，例如释放主卡ENDC链接，并抑制主卡添加ENDC链接，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以停止对ENDC链接添加进行抑制，实现NR能力恢复，以保证双卡信号质量，从而可以避免由于问题组合频段而影响用户基础体验。
第二实施例
图4为针对副卡驻留于5G NSA网络以及主卡驻留于2G/3G/4G网络的场景，本申请实施例提供的双卡终端异常场景下的频段控制方法的信令流程图，具体包括下述的步骤S201B-S212B。
S201B，终端设备的副卡注册到5G NSA网络。
S202B，终端设备的主卡注册到2G/3G/4G网络。
S203B，终端设备激活副卡ENDC链接。
其中，当副卡连接到5G NSA网络，且ENDC链接被激活时，副卡可以与NR和LTE建立双连接，副卡的工作频段包括5G频段和4G频段。
S204B，终端设备判断副卡信号强度是否低于预设门限值。
S205B，终端设备判断双卡组合频段是否在黑名单中。
基于上述S204B和S205B，当终端设备判断双卡组合频段在黑名单中并且副卡信号强度低于预设门限值时，继续执行下述的步骤S206B。
S206B，终端设备向NSA网络发起SCG失败(SCG failure)流程。
S207B，终端设备接收NSA网络下发的SCG释放(SCG release)消息。
S208B，终端设备释放副卡ENDC链接。
S209B，终端设备抑制副卡添加ENDC链接。
其中，当主卡2G/3G/4G频段+副卡5G及4G频段构成的组合频段在黑名单中，且副卡信号质量低于预设门限值时，终端设备向NSA网络发起SCG failure流程，触发NSA网络释放ENDC链接，并抑制ENDC链接添加。
S210B，副卡的工作频段发生变化。
具体地，当副卡已建立的ENDC链接被释放时，副卡的工作频段发生变化，其中5G NR频段被禁用，保留4G频段继续使用。这样，主卡2G/3G/4G频段+副卡5G及4G频段组成的组合频段，变化为主卡2G/3G/4G频段+副卡4G频段组成的组合频段。
S211B，终端设备判断双卡组合频段是否仍然在黑名单中。
若变化后的双卡组合频段(主卡2G/3G/4G频段+副卡4G频段)不在黑名单中，则继续执行下述的步骤S212B；若变化后的双卡组合频段仍然在黑名单中，则返回继续执行上述的S210B。
S212B，终端设备允许副卡添加ENDC链接。
具体地，当变化后的组合频段(主卡2G/3G/4G频段+副卡4G频段)不在黑名单中时，终端设备触发停止对ENDC链接添加进行抑制，因此允许副卡重新建立ENDC链接，继续使用5G频段，实现NR能力恢复。
其中，第二实施例中的S201B至S212B的实现过程分别参见上述第一实施例中对S201A S212A的详细描述，此处不再赘述。
通过第二实施例提供的方案，在终端设备的副卡注册到5G NSA网络，主卡注册到2G/3G/4G网络的场景中，可以通过判断双卡组合频段是否在黑名单中以及副卡信号质量是否低于预设门限值，执行对应的处理策略：若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则进行NR能力回退，例如释放副卡ENDC链接，并抑制副卡添加ENDC链接，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以停止对ENDC链接添加进行抑制，实现NR能力恢复，以保证双卡信号质量，从而可以避免由于问题组合频段而影响用户基础体验。
第三实施例
图5为针对主卡和副卡均驻留于5G NSA网络场景，本申请实施例提供的双卡终端异常场景下的频段控制方法的信令流程图，具体包括下述的步骤S301-S317。
S301，终端设备的主卡注册到5G NSA网络。
S302，终端设备的副卡注册到5G NSA网络。
S303，终端设备激活主卡ENDC链接和副卡ENDC链接。
其中，当主卡连接到5G NSA网络，且ENDC链接被激活时，主卡可以与NR和LTE建立双连接，因此主卡的工作频段包括5G频段和4G频段。
其中，当副卡连接到5G NSA网络，且ENDC链接被激活时，副卡可以与NR和LTE建立双连接，因此副卡的工作频段包括5G频段和4G频段。
S304，终端设备判断副卡信号强度是否低于预设门限值。
S305，终端设备判断双卡组合频段是否在黑名单中。
基于上述S304和S305，当终端设备判断双卡组合频段在黑名单中并且副卡信号强度低于预设门限值时，继续执行下述的步骤S306。
S306，终端设备向NSA网络发起SCG失败(SCG failure)流程。
S307，终端设备接收NSA网络下发的SCG释放(SCG release)消息。
S308，终端设备释放主卡ENDC链接。
S309，终端设备抑制主卡添加ENDC链接。
具体地，当主卡5G及4G频段+副卡5G及4G频段组成的组合频段在黑名单中，且副卡信号质量低于预设门限值时，终端设备发起SCG failure流程，触发网络释放主卡ENDC链接，并抑制主卡添加ENDC链接。
S310，主卡的工作频段发生变化。
当主卡已建立的ENDC链接被释放时，主卡的工作频段发生变化，其中5G NR频段被禁用，保留4G频段继续使用。这样，主卡5G及4G频段+副卡5G及4G频段组成的组合频段，变化为主卡4G频段+副卡5G及4G频段组成的组合频段。
S311，终端设备判断双卡组合频段是否仍然在黑名单中。
若变化后的双卡组合频段(主卡4G频段+副卡5G及4G频段)不在黑名单中，则继续执行下述的步骤S312；若变化后的双卡组合频段仍然在黑名单中，则继续执行下述的S313。
S312，终端设备允许主卡添加ENDC链接。
具体地，当主卡4G频段+副卡5G及4G频段组成的组合频段不在黑名单中时，终端设备触发停止对ENDC链接添加进行抑制，因此允许主卡重新建立ENDC链接，继续使用5G频段，实现NR能力恢复。
S313，若变化后的双卡组合频段仍然在黑名单中，则释放副卡ENDC链接。
S314，终端设备抑制副卡添加ENDC链接。
具体地，当主卡4G频段+副卡5G及4G频段组成的组合频段在黑名单中，且副卡信号质量低于预设门限值时，终端设备发起SCG failure流程，触发网络释放副卡ENDC链接，并抑制副卡添加ENDC链接。
S315，副卡的工作频段发生变化。
当副卡已建立的ENDC链接被释放时，副卡的工作频段发生变化，其中5G NR频段被禁用，保留4G频段继续使用。这样，主卡4G频段+副卡5G及4G频段组成的组合频段，变化为主卡4G频段+副卡4G频段组成的组合频段。
S316，终端设备判断双卡组合频段是否仍然在黑名单中。
若变化后的双卡组合频段(主卡4G频段+副卡4G组合频段)不在黑名单中，则继续执行下述的步骤S317；若变化后的双卡组合频段仍然在黑名单中，则返回继续执行上述的S315。
S317，终端设备允许主卡和/或副卡添加ENDC链接。
具体地，当变化后的组合频段(主卡4G频段+副卡4G频段)不在黑名单中时，终端设备触发停止对ENDC链接添加进行抑制，进而允许主卡重新添加ENDC链接和/或副卡重新添加ENDC链接，即允许主卡和/或副卡使用5G频段，实现NR能力恢复。
通过第三实施例提供的方案，在终端设备的主卡和副卡均注册到5G NSA网络的场景中，可以通过判断双卡组合频段是否在黑名单中以及副卡信号质量是否低于预设门限值，执行对应的处理策略：若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则进行NR能力回退，例如释放主卡ENDC链接，并抑制主卡添加ENDC链接，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段仍然在黑名单中时，可以释放副卡ENDC链接，并抑制副卡添加ENDC链接，以退出黑名单。进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，停止对主卡和/或副卡 ENDC链接添加进行抑制，实现NR能力恢复，以保证双卡信号质量，从而可以避免由于问题组合频段而影响用户基础体验。
需要说明的是，为了便于说明，上述实施例是以先释放主卡ENDC链接，再释放副卡ENDC链接，进行NR能力回退，以退出黑名单为例进行说明的。如图5中的虚线框所示，步骤S308至S312描述了释放主卡ENDC链接的相关过程，步骤S313至S317描述了释放副卡ENDC链接的相关过程。
在实际实现时，当双卡组合频段在黑名单中且副卡信号质量低于预设门限值，进行NR能力回退时，具体先释放主卡ENDC链接再释放副卡ENDC链接，还是先释放副卡ENDC链接再释放主卡ENDC链接，还是同时释放主卡ENDC链接和副卡ENDC链接，进行NR能力回退以退出黑名单，具体可以根据实际使用需求确定，本申请实施例对此不作限定。
以上针对5G网络模式是NSA模式的场景对本申请实施例提供的双卡终端异常场景下的频段控制方法进行了示例性描述，下面针对5G网络模式是SA模式的场景，结合图6、图7和图8，以下述的第四实施例、第五实施例和第六实施例详细说明本申请实施例提供的双卡终端异常场景下的频段控制方法的具体实现方式。
第四实施例
图6为针对主卡驻留于5G SA网络以及副卡驻留于2G/3G/4G网络的场景，本申请实施例提供的双卡终端异常场景下的频段控制方法的信令流程图，具体包括下述的步骤S401A-S414A。
S401A，终端设备的主卡注册到5G SA网络。
终端设备在连接到5G SA网络的过程中，首先连接到5G基站，再附着并注册到5GC。
具体的，终端设备可以先向5G SA网络发送注册请求(registration request)。该注册请求携带终端设备的能力、注册类型、安全参数等信息。终端设备的能力可包括是否支持切换(handover)到演进的分组***(evolved packet system，EPS)、是否支持重定向(redirect)到EPS等等。然后，5G SA网络根据终端设备提供的信息，对终端设备的身份进行验证。验证通过后，若5G SA网络接受终端设备的注册请求，则向终端设备反馈注册接受消息(registration accept)。
终端设备在连接到5G SA网络后，可以与5GC通信，并使用5GC提供的各项服务。
其中，当主卡注册到5G SA网络时，主卡的工作频段为5G频段。
S402A，终端设备的副卡注册到2G/3G/4G网络。
其中，当副卡注册到2G网络时，副卡的工作频段为2G频段。当副卡注册到3G网络时，副卡的工作频段为3G频段。当副卡注册到4G网络时，副卡的工作频段为4G频段。
S403A，终端设备判断副卡信号强度是否低于预设门限值。
当副卡信号强度低于预设门限值时，双卡终端设备处于异常场景。
S404A，终端设备判断双卡组合频段是否在黑名单中。
基于上述S403A和S404A，当终端设备判断双卡组合频段在黑名单中并且副卡信号强度低于预设门限值时，继续执行下述的步骤S405A。
假设主卡的工作频段为NRN28，副卡的工作频段为LTEB40。参考上述表1可知，黑名单中包括(NRN28+LTEB40)。因此，终端设备可以判断双卡组合频段(NRN28+LTEB40)在黑名单中。
S405A，终端设备禁用SA能力。
其中，当主卡5G频段+副卡2G/3G/4G频段组成的组合频段在黑名单中，且副卡信号质量低于预设门限值时，终端设备触发禁用SA能力，并搜索较低制式的2G/3G/4G网络(下面以4G网络为例)进行注册。
S406A，终端设备向4G网络发起TAU流程，并指示SA能力已禁用。
S407A，终端设备接收4G网络下发的TAU完成消息，将主卡注册到4G网络。
示例性地，主卡注册到4G网络是指，终端设备可以在禁用SA能力的情况下，自主连接到4G基站，并将主卡注册到EPC。
具体地，终端设备发起TAU过程，通知5G网络信息变更，5G网络核心网中的AMF可以通过N26接口，将终端设备的上下文迁移到4G网络中的MME中。
在一些实施例中，终端设备在回落至4G LTE网络的过程中，向EPC(例如MME)发送网络能力(network capability)信息，该网络能力信息用于指示终端设备不支持5G以及SA组网方式。通过该方式，EPC会认为终端设备不支持5G以及SA组网方式，即不会触发终端设备从LTE网络切换回5G SA网络。
在另一些实施例中，终端设备还可以在连接至LTE网络后，通过抑制关于NR的B1事件和/或B2事件的上报，来避免终端设备从LTE网络再次切换回5G SA网络。在抑制关于NR的B1事件和/或B2事件的上报之后，即使当前满足上报条件，终端设备也不会上报关于NR的B1事件或B2事件。这样可以避免终端设备从5G SA网络回落至LTE网络后，又在EPC的触发下从LTE网络切换到5G SA网络。
其中，关于NR的B1事件和B2事件是用于启动异***切换的事件。这里，该异***为5G***。具体的，终端设备在5G SA网络邻区质量高于绝对门限4时，上报关于NR的B1事件。终端设备在当前连接到的LTE网络的服务小区质量低于绝对门限5，且异***邻区质量高于绝对门限6时，上报关于NR的B2事件。也就是说，当终端设备向EPC上报关于NR的B1事件或者B2事件后，EPC将触发终端设备从LTE网络切换到5G SA网络。本申请实施例可以通过抑制关于NR的B1事件和/或B2事件的上报，来避免终端设备从LTE网络再次切换回5G SA网络。
S408A，主卡的工作频段发生变化。
在主卡从5G网络回落到4G网络的情况下，主卡的工作频段发生变化；相应地，主卡5G频段+副卡2G/3G/4G频段组成的组合频段，变化为主卡4G频段+副卡2G/3G/4G频段组成的组合频段。
示例性地，假设主卡的工作频段由NRN28变化为LTE B3，那么双卡组合频段由(NRN28+LTEB40)变化为(LTE B3+LTEB40)。
S409A，终端设备判断双卡组合频段是否仍然在黑名单中。
若变化后的双卡组合频段不在黑名单中，则继续执行下述的步骤S410A；若双卡组合频段仍然在黑名单中，则返回继续执行上述的S408A。
示例性地，参考上述表1可知，黑名单中不包括(LTE B3+LTEB40)，因此双卡组合频段不在黑名单中，通过上述频段控制策略，相应地终端设备的副卡信号质量提升，如此可以改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。
S410A，终端设备重新启用SA能力。
具体地，当变化后的组合频段(主卡4G频段+副卡2G/3G/4G频段)不在黑名单中时，表示当前组合频段不再是问题组合频段，终端设备可以重新启用主卡SA能力。
S411A，终端设备向4G网络发起TAU流程，并指示SA能力已恢复。
S412A，终端设备接收4G网络下发的TAU完成消息，将主卡注册到4G网络。
在一些实施例中，终端设备在TAU流程中，向EPC(例如MME)发送网络能力(network capability)信息，该网络能力信息用于指示终端设备支持5G以及SA组网方式。通过该方式，EPC会认为终端设备支持5G以及SA组网方式。
S413A，终端设备向5G SA网络发送移动性更新注册请求。
终端设备在SA能力恢复后，可以通过移动性手段将主卡重选或切换到5G SA网络。终端设备在判断满足一定条件的情况下(5G SA网络的网络质量优于LTE网络的网络质量)，触发终端设备从LTE网络切换回5G SA网络。
S414A，终端设备接收移动性更新注册完成消息，将主卡重新注册到5G SA网络。
具体地，当变化后的组合频段(主卡4G频段+副卡2G/3G/4G频段)不在黑名单中时，终端设备恢复SA能力，并重新注册到5G SA网络，实现NR能力恢复。
通过第四实施例提供的方案，在终端设备的主卡注册到5G SA网络，副卡注册到2G/3G/4G网络的场景中，可以通过判断双卡组合频段是否在黑名单中以及副卡信号质量是否低于预设门限值，执行对应的处理策略：若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则进行NR能力回退，例如禁用SA能力，并将主卡注册到2G/3G/4G网络，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以恢复SA能力，将主卡重新注册到5G SA网络，实现NR能力恢复，以保证双卡信号质量，从而可以避免由于问题组合频段而影响用户基础体验。
第五实施例
图7为针对副卡驻留于5G SA网络以及主卡驻留于2G/3G/4G网络的场景，本申请实施例提供的双卡终端异常场景下的频段控制方法的信令流程图，具体包括下述的步骤S401B-S414B。
S401B，终端设备的副卡注册到5G SA网络。
当副卡注册到5G SA网络时，副卡的工作频段为5G频段。
S402B，终端设备的主卡注册到2G/3G/4G网络。
其中，当主卡注册到2G网络时，主卡的工作频段为2G频段。当主卡注册到3G网络时，主卡的工作频段为3G频段。当主卡注册到4G网络时，主卡的工作频段为4G频段。
S403B，终端设备判断副卡信号强度是否低于预设门限值。
S404B，终端设备判断双卡组合频段是否在黑名单中。
基于上述S403B和S404B，当终端设备判断双卡组合频段在黑名单中并且副卡信号强度低于预设门限值时，继续执行下述的步骤S405B。
S405B，终端设备禁用SA能力。
其中，当主卡2G/3G/4G频段+副卡5G频段组成的组合频段在黑名单中，且副卡信号质量低于预设门限值时，终端设备触发禁用副卡SA能力，并搜索较低制式的2G/3G/4G网络(下面以4G网络为例)进行注册。
S406B，终端设备向4G网络发起TAU流程，并指示副卡SA能力已禁用。
S407B，终端设备接收4G网络下发的TAU完成消息，将副卡注册到4G网络。
S408B，副卡的工作频段发生变化。
在副卡从5G网络回落到4G网络的情况下，副卡的工作频段发生变化；相应地，主卡2G/3G/4G频段+副卡5G频段组成的组合频段，变化为主卡2G/3G/4G频段+副卡4G频段组成的组合频段。
S409B，终端设备判断双卡组合频段是否仍然在黑名单中。
若变化后的双卡组合频段不在黑名单中，则继续执行下述的步骤S410B；若变化后的双卡组合频段仍然在黑名单中，则返回继续执行上述的S408B。
S410B，终端设备重新启用副卡SA能力。
具体地，当变化后的组合频段(主卡2G/3G/4G频段+副卡4G频段)不在黑名单中时，表示当前组合频段不再是问题组合频段，终端设备可以重新启用副卡SA能力。
S411B，终端设备向4G网络发起TAU流程，并指示SA能力已启用。
S412B，终端设备接收4G网络下发的TAU完成消息，将副卡注册到4G网络。
S413B，终端设备向5G SA网络发送移动性更新注册请求。
终端设备在SA能力恢复后，可以通过移动性手段将副卡重选或切换到5G SA网络。
S414B，终端设备接收SA移动性更新注册完成消息，将副卡注册到5G SA网络。
具体地，当变化后的组合频段(主卡2G/3G/4G频段+副卡4G频段)不在黑名单中时，终端设备重新启用副卡SA能力，并将副卡重新注册到5G SA网络，实现NR能力恢复。
其中，上述第五实施例S401B至S414B的实现过程分别参见上述第四实施例中对S401A至S414A的详细描述，此处不再赘述。
通过第五实施例提供的方案，在终端设备的副卡注册到5G SA网络，主卡注册到2G/3G/4G网络的场景中，可以通过判断双卡组合频段是否在黑名单中以及副卡信号质量是否低于预设门限值，执行对应的处理策略：若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则进行NR能力回退，例如禁用SA能力，并将副卡注册到2G/3G/4G网络，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以恢复SA能力，将副卡重新注册到5G SA网络，实现NR能力恢复，以保证双卡信号质量，从而可以避免由于问题组合频段而影响用户基础体验。
第六实施例
图8为针对主卡和副卡均驻留于5G SA网络的场景，本申请实施例提供的双卡终端异常场景下的频段控制方法的信令流程图，具体包括下述的步骤S501-S519。
S501，终端设备的主卡注册到5G SA网络。
当主卡注册到5G SA网络时，主卡的工作频段为5G频段。
S502，终端设备的副卡注册到5G SA网络。
当副卡注册到5G SA网络时，副卡的工作频段为5G频段。
S503，终端设备判断副卡信号强度是否低于预设门限值。
S504，终端设备判断双卡组合频段是否在黑名单中。
基于上述S503和S504，当终端设备判断双卡组合频段在黑名单中并且副卡信号强度低于预设门限值时，继续执行下述的步骤S505。
S505，终端设备禁用主卡SA能力。
其中，当主卡5G频段+副卡5G频段组成的组合频段在黑名单中，且副卡信号质量低于预设门限值时，终端设备触发禁用主卡SA能力，并搜索较低制式的2G/3G/4G网络(下面以4G网络为例)进行注册。
S506，终端设备向4G网络发起TAU流程，并指示主卡SA能力已禁用。
S507，终端设备接收4G网络下发的TAU完成消息，将主卡注册到4G网络。
S508，主卡的工作频段发生变化。
在主卡从5G网络回落到4G网络的情况下，主卡的工作频段发生变化；相应地，主卡5G频段+副卡5G频段组成的组合频段，变化为主卡4G频段+副卡5G频段组成的组合频段。
S509，终端设备判断双卡组合频段(主卡4G频段+副卡5G频段)是否仍然在黑名单中。
S510，若变化后的双卡组合频段不在黑名单中，终端设备重新启用主卡SA能力。
进一步地，终端设备在SA能力恢复后，可以通过移动性手段将主卡重选或切换到5G SA网络。为了便于说明，图8中未示出该步骤。
S511，若变化后的双卡组合频段仍然在黑名单中，终端设备禁用副卡SA能力。
其中，当副卡SA能力被禁用时，副卡5G NR频段被禁用。
S512，终端设备向4G网络发起TAU流程，并指示副卡SA能力已禁用。
S513，终端设备接收4G网络下发的TAU完成消息，将副卡注册到4G网络。
S514，副卡的工作频段发生变化。
在副卡从5G网络回落到4G网络的情况下，副卡的工作频段发生变化；相应地，主卡4G频段+副卡5G频段组成的组合频段，变化为主卡4G频段+副卡4G频段组成的组合频段。
S515，终端设备判断双卡组合频段是否仍然在黑名单中。
若变化后的双卡组合频段不在黑名单中，则继续执行下述的步骤S516；若变化后的双卡组合频段仍然在黑名单中，则结束。
S516，终端设备恢复主卡SA能力和/或副卡SA能力。
其中，当主卡4G频段+副卡4G频段组成的组合频段不在黑名单中时，表示当前组合频段不再是问题组合频段，终端设备可以重新启用主卡和副卡SA能力。
S517，终端设备向4G网络发起TAU流程，并指示SA能力已启用。
进一步地，终端设备在SA能力恢复后，可以通过移动性手段将主卡和/或副卡重选或切换到5G SA网络。
S518，终端设备向5G SA网络发送移动性更新注册请求。
S519，终端设备接收SA移动性更新注册完成消息，将主卡和副卡注册到5G SA网络。
其中，当变化后的组合频段(主卡4G频段+副卡4G频段)不在黑名单中时，终端设备重新启用主卡和副卡SA能力，并将主卡和副卡注册到5G SA网络，实现NR能力恢复。
通过第六实施例提供的方案，在终端设备的主卡注册到5G SA网络，主卡注册到5G SA网络的场景中，可以通过判断双卡组合频段是否在黑名单中以及副卡信号质量是否低于预设门限值，执行对应的处理策略：若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则进行NR能力回退，例如禁用主卡SA能力，并将主卡注册到2G/3G/4G网络，以 提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段仍然在黑名单中时，则再次进行NR能力回退，例如禁用副卡SA能力，并将副卡注册到2G/3G/4G网络，以退出黑名单。进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，可以恢复主卡和/或副卡SA能力，将主卡和/或副卡重新注册到5G SA网络，实现NR能力恢复，以保证双卡信号质量，从而可以避免由于问题组合频段而影响用户基础体验。
需要说明的是，为了便于说明，上述实施例是以先禁用主卡SA能力，再禁用副卡SA能力，进行NR能力回退，以退出黑名单为例进行说明的。如图8中虚线框所示，步骤S505至S510描述了禁用主卡SA能力的相关过程，步骤S511至S516描述了禁用副卡SA能力的相关过程。
在实际实现时，当双卡组合频段在黑名单中且副卡信号质量低于预设门限值，进行NR能力回退时，具体先禁用主卡SA能力再禁用副卡SA能力，还是先禁用副卡SA能力再禁用主卡SA能力，还是同时禁用主卡SA能力和副卡SA能力，进行NR能力回退以退出黑名单，具体可以根据实际使用需求确定，本申请实施例对此不作限定。
需要说明的是，针对双卡终端设备的异常场景，本申请实施例包括但不限于上述表2所示的情况，即包括但不限于上述第一实施例至第六实施例，还可能包括其他可能的场景，例如主卡和副卡分别驻留于5G SA网络和5G NSA网络的场景，这些场景均可以基于本申请实施例以具体示例说明的各种解决方案实现。例如，针对支持5G SA模式和5G NSA模式的双卡用户场景，假设主卡和副卡分别驻留于5G SA网络和5G NSA网络，本申请实施例可以判断双卡组合频段是否在黑名单中以及主卡和/或副卡信号质量是否满足低于预设门限值，若双卡组合频段在黑名单中且主卡和/或副卡信号质量低于预设门限值，则控制终端设备NR能力回退，例如禁用SA能力和/或释放ENDC链接中的NR链路，以提升双卡信号质量。
也需要说明的是，在本申请实施例中，“高于”可以替换为“高于或等于”，“低于或等于”可以替换为“低于”，或者，“高于或等于”可以替换为“高于”，“低于”可以替换为“低于或等于”。
本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
可以理解的是，上述各个方法实施例中由终端设备实现的方法和操作，也可以由可用于终端设备的部件(例如芯片或者电路)实现。
上文描述了本申请提供的方法实施例，下文将描述本申请提供的装置实施例。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
上文主要从方法步骤的角度对本申请实施例提供的方案进行了描述。可以理解的是，为了实现上述功能，实施该方法的终端设备包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现 不应认为超出本申请的保护范围。
本申请实施例可以根据上述方法示例，对终端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有其它可行的划分方式。下面以采用对应各个功能划分各个功能模块为例进行说明。
为了更好地实施本申请实施例提供的双卡终端异常场景下的频段控制方法，本申请实施例还提供了对应的装置。
参考图9，图9为本申请实施例提供的终端设备800的结构示意图。该终端设备800可以为上述实施例提及的终端设备。
终端设备800可以包括处理器810，外部存储器接口820，内部存储器821，通用串行总线(universal serial bus，USB)接口830，充电管理模块840，电源管理模块841，电池842，天线1，天线2，移动通信模块850，无线通信模块860，音频模块870，扬声器870A，受话器870B，麦克风870C，耳机接口870D，传感器模块880，按键890，马达891，指示器892，摄像头893，显示屏894，以及用户标识模块(subscriber identification module，SIM)卡接口895等。其中传感器模块880可以包括压力传感器880A，陀螺仪传感器880B，气压传感器880C，磁传感器880D，加速度传感器880E，距离传感器880F，接近光传感器880G，指纹传感器880H，温度传感器880I，触摸传感器880J，环境光传感器880K，骨传导传感器880L等。
可以理解的是，本申请实施例示意的结构并不构成对终端设备800的具体限定。终端设备800可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
处理器810可以包括一个或多个处理单元，例如：处理器810可以包括应用处理器(application processor，AP)，调制解调处理器(modem)，图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，视频编解码器，数字信号处理器(digital signal processor，DSP)，基带处理器，和/或神经网络处理器(neural-network processing unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。处理器810中还可以设置存储器，用于存储指令和数据。
终端设备800的无线通信功能可以通过天线1，天线2，移动通信模块850，无线通信模块860，调制解调处理器以及基带处理器等实现。
天线1和天线2用于发射和接收电磁波信号。终端设备800中的每个天线可用于覆盖单个或多个通信频带。不同的天线还可以复用，以提高天线的利用率。例如：可以将天线1复用为无线局域网的分集天线。在另外一些实施例中，天线可以和调谐开关结合使用。
移动通信模块850可以提供应用在终端设备800上的包括2G/3G/4G/5G等无线通信的解决方案。移动通信模块850可以包括至少一个滤波器，开关，功率放大器，低噪声放大器(low noise amplifier，LNA)等。移动通信模块850可以由天线1接收电磁波，并对接收的电磁波进行滤波，放大等处理，传送至调制解调处理器进行解调。移动通信模块850还可以对经调制解调处理器调制后的信号放大，经天线1转为电磁波辐射出去。在一些实 施例中，移动通信模块850的至少部分功能模块可以被设置于处理器810中。在一些实施例中，移动通信模块850的至少部分功能模块可以与处理器810的至少部分模块被设置在同一个器件中。
调制解调处理器可以包括调制器和解调器。其中，调制器用于将待发送的低频基带信号调制成中高频信号。解调器用于将接收的电磁波信号解调为低频基带信号。随后解调器将解调得到的低频基带信号传送至基带处理器处理。低频基带信号经基带处理器处理后，被传递给应用处理器。应用处理器通过音频设备(不限于扬声器870A，受话器870B等)输出声音信号，或通过显示屏894显示图像或视频。在一些实施例中，调制解调处理器可以是独立的器件。在另一些实施例中，调制解调处理器可以独立于处理器810，与移动通信模块850或其他功能模块设置在同一个器件中。在一些实施例中，终端设备800可以包括两个调制解调处理器，一个对应于4G，另一个对应于5G。
无线通信模块860可以提供应用在终端设备800上的包括无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，蓝牙(bluetooth，BT)等无线通信的解决方案。无线通信模块860可以是集成至少一个通信处理模块的一个或多个器件。无线通信模块860经由天线2接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器810。无线通信模块860还可以从处理器810接收待发送的信号，对其进行调频，放大，经天线2转为电磁波辐射出去。
在一些实施例中，终端设备800的天线1和移动通信模块850耦合，天线2和无线通信模块860耦合，使得终端设备800可以通过无线通信技术与网络以及其他设备通信。所述无线通信技术可以包括GSM，GPRS，CDMA，WCDMA，TD-SCDMA，LTE，NR，BT，WLAN，NFC，FM，和/或IR技术等。
在本申请实施例中，无线通信模块860用于在处理器的指示下，将两个SIM卡均连接到5G SA网络，或者将一个SIM卡连接到5G SA网络以及将另一SIM卡连接到LTE网络。在一些实施例中，处理器针对支持5G SA模式或5G NSA模式的双卡用户场景，判断双卡组合频段是否在黑名单中以及副卡信号质量是否满足低于预设门限值，若双卡组合频段在黑名单中且副卡信号质量低于预设门限值，则控制终端设备NR能力回退，例如禁用SA能力，或者释放ENDC链接中的NR链路，以提升副卡信号质量；进一步地，当双卡组合频段发生变化且变化后的双卡组合频段不在黑名单中时，控制终端设备NR能力恢复，例如重新启用SA能力，或者允许添加ENDC链接，以保证双卡信号质量，从而可以改善双卡终端设备由于工作于问题组合频段而引起信号质量变差的情况。这里，无线通信模块860实现的具体操作可参考前文实施例的相关描述，在此不赘述。
终端设备800通过GPU，显示屏894，以及应用处理器等实现显示功能。GPU为图像处理的微处理器，连接显示屏894和应用处理器。GPU用于执行数学和几何计算，用于图形渲染。处理器810可包括一个或多个GPU，其执行程序指令以生成或改变显示信息。
显示屏894用于显示图像，视频等。显示屏894包括显示面板。
终端设备800可以通过ISP，摄像头893，视频编解码器，GPU，显示屏894以及应用处理器等实现拍摄功能。ISP用于处理摄像头893反馈的数据。摄像头893用于捕获静态图像或视频。数字信号处理器用于处理数字信号，除了可以处理数字图像信号，还可以处理其他数字信号。例如，当终端设备800在频点选择时，数字信号处理器用于对频点能量 进行傅里叶变换等。频编解码器用于对数字视频压缩或解压缩。
内部存储器821可以用于存储计算机可执行程序代码，所述可执行程序代码包括指令。内部存储器821可以包括存储程序区和存储数据区。其中，存储程序区可存储操作***，至少一个功能所需的应用程序(比如声音播放功能，图像播放功能等)等。
终端设备800可以通过音频模块870，扬声器870A，受话器870B，麦克风870C，耳机接口870D，以及应用处理器等实现音频功能。例如音乐播放，录音等。
压力传感器880A用于感受压力信号，可以将压力信号转换成电信号。在一些实施例中，压力传感器880A可以设置于显示屏894。
触摸传感器880J，也称“触控面板”。触摸传感器880J可以设置于显示屏894，由触摸传感器880J与显示屏894组成触摸屏，也称“触控屏”。触摸传感器880J用于检测作用于其上或附近的触摸操作。触摸传感器可以将检测到的触摸操作传递给应用处理器，以确定触摸事件类型。可以通过显示屏894提供与触摸操作相关的视觉输出。在另一些实施例中，触摸传感器880J也可以设置于终端设备800的表面，与显示屏894所处的位置不同。
SIM卡接口895用于连接SIM卡，例如SIM卡1和SIM卡2。SIM卡可以通过***SIM卡接口895，或从SIM卡接口895拔出，实现和终端设备800的接触和分离。终端设备800可以支持1个或N个SIM卡接口，N为大于1的正整数。SIM卡接口895可以支持Nano SIM卡，Micro SIM卡，SIM卡等。同一个SIM卡接口895可以同时***多张卡。所述多张卡的类型可以相同，也可以不同。SIM卡接口895也可以兼容不同类型的SIM卡。SIM卡接口895也可以兼容外部存储卡。终端设备800通过SIM卡和网络交互，实现通话以及数据通信等功能。在一些实施例中，终端设备800采用eSIM，即：嵌入式SIM卡。eSIM卡可以嵌在终端设备800中，不能和终端设备800分离。
在本申请实施例中，SIM卡用于存储用户信息，该用户信息可包括IMSI。终端设备800可以使用该用户信息作为身份标识，注册到网络。
本申请实施例中的终端设备800可以为智能手机(例如搭载Android***或iOS***的手机等)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(MID，mobile internet device)、可穿戴设备(例如智能手表、智能手环等)或其他可以接入互联网的设备。
参考图10，图10为本申请实施例提供的网络设备900的结构示意图。在一些实施例中，网络设备900可以为上述实施例中的5G基站。在另一些实施例中，网络设备900可以为上述实施例中的4G基站。
如图10所示，网络设备900可包括：一个或多个处理器901、存储器902、通信接口903、发射器905、接收器906、耦合器907和天线908。这些部件可通过总线904或者其他方式连接，图10以通过总线连接为例。其中：
通信接口903可用于网络设备900与其他通信设备，例如终端设备、5GC或其他网络设备，进行通信。具体的，通信接口903可以是5G或者未来新空口的通信接口。不限于无线通信接口，网络设备900还可以配置有有线的通信接口903来支持有线通信，例如一个网络设备900与其他网络设备900之间的回程链接可以是有线通信连接。
在本申请的一些实施例中，发射器905和接收器906可看作一个无线调制解调器。
发射器905可用于对处理器901输出的信号进行发射处理。接收器906可用于接收信号。在网络设备900中，发射器905和接收器906的数量均可以是一个或者多个。天线908 可用于将传输线中的电磁能转换成自由空间中的电磁波，或者将自由空间中的电磁波转换成传输线中的电磁能。耦合器907可用于将移动通信号分成多路，分配给多个的接收器906。可理解的，网络设备的天线908可以实现为大规模天线阵列。
存储器902与处理器901耦合，用于存储各种软件程序和/或多组指令。具体的，存储器902可包括高速随机存取的存储器，并且也可包括非易失性存储器，例如一个或多个磁盘存储设备、闪存设备或其他非易失性固态存储设备。
存储器902可以存储操作***(下述简称***)，例如uCOS、VxWorks、RTLinux等嵌入式操作***。存储器902还可以存储网络通信程序，该网络通信程序可用于与一个或多个附加设备，一个或多个终端设备，一个或多个网络设备进行通信。
本申请实施例中，处理器901可用于读取和执行计算机可读指令。具体的，处理器901可用于调用存储于存储器902中的程序，例如本申请的一个或多个实施例提供的双卡终端异常场景下的频段控制方法在网络设备900侧的实现程序，并执行该程序包含的指令。
需要说明的是，图10所示的网络设备900仅仅是本申请实施例的一种实现方式，实际应用中，网络设备900还可以包括更多或更少的部件，这里不作限制。
本申请的各实施方式可以任意进行组合，以实现不同的技术效果。
可选地，在一些实施例中，本申请实施例还提供了一种计算机可读介质，该计算机可读介质存储有程序代码，当计算机程序代码在计算机上运行时，使得计算机执行上述各方面中的方法。
可选地，在一些实施例中，本申请实施例还提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当计算机程序代码在计算机上运行时，使得计算机执行上述各方面中的方法。
在本申请实施例中，终端设备或网络设备包括硬件层、运行在硬件层之上的操作***层，以及运行在操作***层上的应用层。其中，硬件层可以包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。操作***层的操作***可以是任意一种或多种通过进程(process)实现业务处理的计算机操作***，例如，Linux操作***、Unix操作***、Android操作***、iOS操作***或windows操作***等。应用层可以包含浏览器、通讯录、文字处理软件、即时通信软件等应用。
本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本文中使用的术语“制品”可以涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。
本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可以包括但不限于：无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专 用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)。例如，RAM可以用作外部高速缓存。作为示例而非限定，RAM可以包括如下多种形式：静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)可以集成在处理器中。
还需要说明的是，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的保护范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。此外，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上，或者说对 现有技术做出贡献的部分，或者该技术方案的部分，可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，该计算机软件产品包括若干指令，该指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。前述的存储介质可以包括但不限于：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (20)

  1. 一种双卡终端异常场景下的频段控制方法，其特征在于，应用于终端设备，所述终端设备支持5G独立组网SA模式和/或非独立组网NSA模式，所述方法包括：
    当所述终端设备的第一身份识别卡的工作频段和第二身份识别卡的工作频段属于预设黑名单中的组合频段，且所述第一身份识别卡或所述第二身份识别卡的信号质量不满足预设信号质量条件时，禁止所述终端设备工作于5G新空口NR频段；
    其中，所述禁止所述终端设备工作于5G NR频段，包括：
    若所述终端设备处于5G SA模式，则关闭所述终端设备的5G SA能力，并将所述终端设备注册到第一网络，所述第一网络为4G或3G或2G网络；或者，
    若所述终端设备处于5G NSA模式，则释放所述终端设备的双连接ENDC链接中的NR链路。
  2. 根据权利要求1所述的方法，其特征在于，在所述禁止所述终端设备工作于5G NR频段之后，所述方法还包括：
    当检测到所述第一身份识别卡的工作频段和/或所述第二身份识别卡的工作频段发生变化时，判断变化后的所述第一身份识别卡的工作频段和所述第二身份识别卡的工作频段是否属于所述预设黑名单中的组合频段；
    当变化后的所述第一身份识别卡的工作频段和所述第二身份识别卡的工作频段不属于所述预设黑名单中的组合频段时，允许所述终端设备工作于5G NR频段。
  3. 根据权利要求1或2所述的方法，其特征在于，所述若所述终端设备处于5G SA模式，则关闭所述终端设备的5G SA能力，并将所述终端设备注册到第一网络，包括：
    在所述第一身份识别卡驻留于5G SA网络，所述第二身份识别卡驻留于4G或3G或2G网络的情况下，关闭所述第一身份识别卡的5G SA能力，并将所述第一身份识别卡注册到所述第一网络；或者，
    在所述第一身份识别卡和所述第二身份识别卡均驻留于5G SA网络的情况下，关闭目标卡的5G SA能力，并将所述目标卡注册到所述第一网络；其中，目标卡为所述第一身份识别卡和/或所述第二身份识别卡。
  4. 根据权利要求3所述的方法，其特征在于，所述关闭目标卡的5G SA能力，并将所述目标卡注册到所述第一网络，包括：
    关闭所述第一身份识别卡的5G SA能力，并将所述第一身份识别卡注册到所述第一网络；
    当检测到所述第一身份识别卡的工作频段和/或所述第二身份识别卡的工作频段发生变化时，判断所述第一身份识别卡的工作频段和所述第二身份识别卡的工作频段是否仍然属于所述预设黑名单中的组合频段；
    当所述第一身份识别卡的工作频段和所述第二身份识别卡的工作频段仍然属于所述预设黑名单中的组合频段时，关闭所述第二身份识别卡的5G SA能力，并将所述第二身份识别卡注册到所述第一网络。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述若所述终端设备处于5G NSA模式，则释放所述终端设备的ENDC链接中的NR链路，包括：
    在所述第一身份识别卡驻留于5G NSA网络，所述第二身份识别卡驻留于4G或3G或2G网络的情况下，释放所述第一身份识别卡对应的ENDC链接；或者，
    在所述第一身份识别卡和所述第二身份识别卡均驻留于5G NSA网络的情况下，释放所述第一身份识别卡和所述第二身份识别卡中至少一个身份识别卡对应的ENDC链接中的NR链路。
  6. 根据权利要求5所述的方法，其特征在于，所述释放所述第一身份识别卡和所述第二身份识别卡中至少一个身份识别卡对应的ENDC链接，包括：
    释放所述第一身份识别卡对应的ENDC链接；
    当检测到所述第一身份识别卡的工作频段和/或所述第二身份识别卡的工作频段发生变化时，判断所述第一身份识别卡的工作频段和所述第二身份识别卡的工作频段是否仍然属于所述预设黑名单中的组合频段；
    当所述第一身份识别卡的工作频段和所述第二身份识别卡的工作频段仍然属于所述预设黑名单中的组合频段时，释放所述第二身份识别卡对应的ENDC链接。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，在所述释放所述终端设备的ENDC链接中的NR链路之后，所述方法还包括：
    禁止所述终端设备再次添加ENDC链接。
  8. 根据权利要求1至7中任一项所述的方法，其特征在于，所述预设黑名单包括至少一个组合频段，所述至少一个组合频段中的一个组合频段包括与第一网络制式对应的频段、以及与第二网络制式对应的频段。
  9. 根据权利要求8所述的方法，其特征在于，所述至少一个组合频段中包括以下组合频段中的至少一个：
    NRN1以及GSMB20；
    NRN1以及WCDMAB8；
    NRN28以及LTEB40；
    NRN78以及CDMAB2；
    NRN78以及NRN3；
    LTE B3和NR N41的组合、以及LTE B5。
  10. 根据权利要求1至9中任一项所述的方法，其特征在于，所述将所述终端设备注册到第一网络，包括：
    通过切换方式或者重定向方式将所述终端设备注册到第一网络。
  11. 根据权利要求10所述的方法，其特征在于，所述通过切换方式或者重定向方式将所述终端设备注册到第一网络，包括：
    所述终端设备搜索所述第一网络；
    所述终端设备向所述第一网络发起跟踪区更新TAU流程，并指示所述终端设备的5G SA能力已关闭；
    所述终端设备从所述第一网络接收TAU完成消息；以及
    响应于所述TAU完成消息，所述终端设备注册到所述第一网络。
  12. 根据权利要求1至11中任一项所述的方法，其特征在于，所述释放所述终端设备的ENDC链接，包括：
    所述终端设备向所述5G NSA网络发起辅小区群SCG失败流程；
    所述终端设备从所述5G NSA网络接收SCG释放消息；
    响应于所述SCG释放消息，所述终端设备释放ENDC链接中的NR链路。
  13. 根据权利要求2所述的方法，其特征在于，所述允许所述终端设备工作于5G NR频段，包括：
    若所述终端设备处于5G SA模式，则重新开启所述终端设备的5G SA能力；或者，
    若所述终端设备处于5G NSA模式，则允许所述终端设备添加ENDC链接。
  14. 根据权利要求13所述的方法，其特征在于，在所述重新开启所述终端设备的5G SA能力之后，所述方法还包括：
    所述终端设备向第二网络发起TAU流程，并指示所述终端设备的5G SA能力已开启；
    其中，所述第二网络为5G SA网络、4G网络、3G网络和/或2G网络。
  15. 根据权利要求13或14所述的方法，其特征在于，在所述重新开启所述终端设备的5G SA能力之后，所述方法还包括：
    所述终端设备通过切换方式或者重定向方式重新注册到5G SA网络。
  16. 根据权利要求15所述的方法，其特征在于，所述终端设备通过切换方式或者重定向方式重新注册到5G SA网络，包括：
    所述终端设备向5G SA网络发送移动性更新注册请求；
    所述终端设备从所述5G SA网络接收移动性更新注册完成消息；以及
    响应于所述移动性更新注册完成消息，所述终端设备注册到5G SA网络。
  17. 根据权利要求1至16中任一项所述的方法，其特征在于，所述第一身份识别卡为主卡，所述第二身份识别卡为副卡；或者，所述第一身份识别卡为副卡，所述第二身份识别卡为主卡。
  18. 一种终端设备，其特征在于，包括处理器，所述处理器与存储器耦合，所述处理器用于执行所述存储器中存储的计算机程序或指令，以使得所述终端设备实现如权利要求1至17中任一项所述的方法。
  19. 一种芯片，其特征在于，所述芯片与存储器耦合，所述芯片用于读取并执行所述存储器中存储的计算机程序，以实现如权利要求1至17中任一项所述的方法。
  20. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，当所述计算机程序在终端设备上运行时，使得所述终端设备执行如权利要求1至17中任一项所述的方法。
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CN116320152A (zh) * 2023-05-24 2023-06-23 荣耀终端有限公司 一种会议中接收来电的处理方法、终端及芯片***
CN117135618A (zh) * 2023-03-21 2023-11-28 荣耀终端有限公司 设置本机号码功能的方法、设备及存储介质

Families Citing this family (4)

* Cited by examiner, † Cited by third party
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CN116709499A (zh) * 2021-05-20 2023-09-05 荣耀终端有限公司 双卡终端异常场景下的频段控制方法及终端设备
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CN115134901B (zh) * 2022-06-28 2024-06-14 维沃移动通信有限公司 通信处理方法及装置、终端和可读存储介质

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107820332A (zh) * 2017-11-02 2018-03-20 珠海市魅族科技有限公司 一种移动终端和射频信号的传输控制方法
CN110166074A (zh) * 2019-06-14 2019-08-23 Oppo广东移动通信有限公司 射频电路、电子设备及射频电路的控制方法
CN110677867A (zh) * 2019-10-09 2020-01-10 中国联合网络通信集团有限公司 信号强度显示方法和信号强度显示***
CN111372327A (zh) * 2020-02-18 2020-07-03 华为技术有限公司 基于5g sa网络的呼叫方法、电子设备及***
CN111988775A (zh) * 2020-08-28 2020-11-24 Oppo（重庆）智能科技有限公司 一种网络配置方法、装置及计算机可读存储介质
US20210120524A1 (en) * 2019-12-10 2021-04-22 Intel Corporation User equipment operation with multiple subscriber identity modules
CN112714431A (zh) * 2019-10-24 2021-04-27 深圳市万普拉斯科技有限公司 双卡终端的业务处理方法、装置、计算机设备和存储介质
CN112788713A (zh) * 2019-11-07 2021-05-11 Oppo（重庆）智能科技有限公司 网络连接方法及终端、计算机存储介质
CN113891452A (zh) * 2021-05-20 2022-01-04 荣耀终端有限公司 双卡终端异常场景下的频段控制方法及终端设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9445276B2 (en) * 2014-05-16 2016-09-13 Qualcomm Incorporated Preventing coexistence interference through smart band selection in MSMA devices
CN108377574B (zh) * 2016-10-31 2020-04-21 华为技术有限公司 一种双卡双通的通信方法、终端、网络及***
US11051211B2 (en) * 2017-04-13 2021-06-29 Samsung Electronics Co., Ltd Method and system for managing 4G-5G inter-network switching
US11369003B2 (en) * 2019-07-15 2022-06-21 Qualcomm Incorporated Configuring non-standalone mode for a multi-subscriber identity module user equipment
WO2021072727A1 (en) * 2019-10-18 2021-04-22 Qualcomm Incorporated Switching from non-standalone mode to standalone mode for new radio communications

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107820332A (zh) * 2017-11-02 2018-03-20 珠海市魅族科技有限公司 一种移动终端和射频信号的传输控制方法
CN110166074A (zh) * 2019-06-14 2019-08-23 Oppo广东移动通信有限公司 射频电路、电子设备及射频电路的控制方法
CN110677867A (zh) * 2019-10-09 2020-01-10 中国联合网络通信集团有限公司 信号强度显示方法和信号强度显示***
CN112714431A (zh) * 2019-10-24 2021-04-27 深圳市万普拉斯科技有限公司 双卡终端的业务处理方法、装置、计算机设备和存储介质
CN112788713A (zh) * 2019-11-07 2021-05-11 Oppo（重庆）智能科技有限公司 网络连接方法及终端、计算机存储介质
US20210120524A1 (en) * 2019-12-10 2021-04-22 Intel Corporation User equipment operation with multiple subscriber identity modules
CN111372327A (zh) * 2020-02-18 2020-07-03 华为技术有限公司 基于5g sa网络的呼叫方法、电子设备及***
CN111988775A (zh) * 2020-08-28 2020-11-24 Oppo（重庆）智能科技有限公司 一种网络配置方法、装置及计算机可读存储介质
CN113891452A (zh) * 2021-05-20 2022-01-04 荣耀终端有限公司 双卡终端异常场景下的频段控制方法及终端设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4149180A4

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117135618A (zh) * 2023-03-21 2023-11-28 荣耀终端有限公司 设置本机号码功能的方法、设备及存储介质
CN117135618B (zh) * 2023-03-21 2024-05-31 荣耀终端有限公司 设置本机号码功能的方法、设备及存储介质
CN116320152A (zh) * 2023-05-24 2023-06-23 荣耀终端有限公司 一种会议中接收来电的处理方法、终端及芯片***
CN116320152B (zh) * 2023-05-24 2023-10-20 荣耀终端有限公司 一种会议中接收来电的处理方法、终端及芯片***

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